chore(deps): bump github.com/go-git/go-git/v5 from 5.16.5 to 5.19.0

Bumps [github.com/go-git/go-git/v5](https://github.com/go-git/go-git) from 5.16.5 to 5.19.0.
- [Release notes](https://github.com/go-git/go-git/releases)
- [Changelog](https://github.com/go-git/go-git/blob/main/HISTORY.md)
- [Commits](https://github.com/go-git/go-git/compare/v5.16.5...v5.19.0)

---
updated-dependencies:
- dependency-name: github.com/go-git/go-git/v5
  dependency-version: 5.19.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -5,7 +5,7 @@ go 1.26
 require (
 	github.com/alecthomas/chroma/v2 v2.23.1
 	github.com/davecgh/go-spew v1.1.1
-	github.com/go-git/go-git/v5 v5.16.5
+	github.com/go-git/go-git/v5 v5.19.0
 	github.com/mattn/go-isatty v0.0.20
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/spf13/cobra v1.10.2
@@ -21,19 +21,19 @@ require (
 	github.com/dlclark/regexp2 v1.11.5 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
-	github.com/go-git/go-billy/v5 v5.7.0 // indirect
+	github.com/go-git/go-billy/v5 v5.9.0 // indirect
 	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/kevinburke/ssh_config v1.5.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
-	github.com/pjbgf/sha1cd v0.5.0 // indirect
+	github.com/pjbgf/sha1cd v0.6.0 // indirect
 	github.com/sergi/go-diff v1.4.0 // indirect
 	github.com/skeema/knownhosts v1.3.2 // indirect
 	github.com/spf13/pflag v1.0.9 // indirect
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
-	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/crypto v0.50.0 // indirect
-	golang.org/x/net v0.50.0 // indirect
+	golang.org/x/net v0.53.0 // indirect
-	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/sys v0.43.0 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 )

go.sum

@@ -33,12 +33,12 @@ github.com/gliderlabs/ssh v0.3.8 h1:a4YXD1V7xMF9g5nTkdfnja3Sxy1PVDCj1Zg4Wb8vY6c=
 github.com/gliderlabs/ssh v0.3.8/go.mod h1:xYoytBv1sV0aL3CavoDuJIQNURXkkfPA/wxQ1pL1fAU=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 h1:+zs/tPmkDkHx3U66DAb0lQFJrpS6731Oaa12ikc+DiI=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376/go.mod h1:an3vInlBmSxCcxctByoQdvwPiA7DTK7jaaFDBTtu0ic=
-github.com/go-git/go-billy/v5 v5.7.0 h1:83lBUJhGWhYp0ngzCMSgllhUSuoHP1iEWYjsPl9nwqM=
+github.com/go-git/go-billy/v5 v5.9.0 h1:jItGXszUDRtR/AlferWPTMN4j38BQ88XnXKbilmmBPA=
-github.com/go-git/go-billy/v5 v5.7.0/go.mod h1:/1IUejTKH8xipsAcdfcSAlUlo2J7lkYV8GTKxAT/L3E=
+github.com/go-git/go-billy/v5 v5.9.0/go.mod h1:jCnQMLj9eUgGU7+ludSTYoZL/GGmii14RxKFj7ROgHw=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMje31YglSBqCdIqdhKBW8lokaMrL3uTkpGYlE2OOT4=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399/go.mod h1:1OCfN199q1Jm3HZlxleg+Dw/mwps2Wbk9frAWm+4FII=
-github.com/go-git/go-git/v5 v5.16.5 h1:mdkuqblwr57kVfXri5TTH+nMFLNUxIj9Z7F5ykFbw5s=
+github.com/go-git/go-git/v5 v5.19.0 h1:+WkVUQZSy/F1Gb13udrMKjIM2PrzsNfDKFSfo5tkMtc=
-github.com/go-git/go-git/v5 v5.16.5/go.mod h1:QOMLpNf1qxuSY4StA/ArOdfFR2TrKEjJiye2kel2m+M=
+github.com/go-git/go-git/v5 v5.19.0/go.mod h1:Pb1v0c7/g8aGQJwx9Us09W85yGoyvSwuhEGMH7zjDKQ=
 github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 h1:f+oWsMOmNPc8JmEHVZIycC7hBoQxHH9pNKQORJNozsQ=
 github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8/go.mod h1:wcDNUvekVysuuOpQKo3191zZyTpiI6se1N1ULghS0sw=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
@@ -66,8 +66,8 @@ github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/onsi/gomega v1.34.1 h1:EUMJIKUjM8sKjYbtxQI9A4z2o+rruxnzNvpknOXie6k=
 github.com/onsi/gomega v1.34.1/go.mod h1:kU1QgUvBDLXBJq618Xvm2LUX6rSAfRaFRTcdOeDLwwY=
-github.com/pjbgf/sha1cd v0.5.0 h1:a+UkboSi1znleCDUNT3M5YxjOnN1fz2FhN48FlwCxs0=
+github.com/pjbgf/sha1cd v0.6.0 h1:3WJ8Wz8gvDz29quX1OcEmkAlUg9diU4GxJHqs0/XiwU=
-github.com/pjbgf/sha1cd v0.5.0/go.mod h1:lhpGlyHLpQZoxMv8HcgXvZEhcGs0PG/vsZnEJ7H0iCM=
+github.com/pjbgf/sha1cd v0.6.0/go.mod h1:lhpGlyHLpQZoxMv8HcgXvZEhcGs0PG/vsZnEJ7H0iCM=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -93,13 +93,13 @@ github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM
 github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw=
 go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/crypto v0.48.0 h1:/VRzVqiRSggnhY7gNRxPauEQ5Drw9haKdM0jqfcCFts=
+golang.org/x/crypto v0.50.0 h1:zO47/JPrL6vsNkINmLoo/PH1gcxpls50DNogFvB5ZGI=
-golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
+golang.org/x/crypto v0.50.0/go.mod h1:3muZ7vA7PBCE6xgPX7nkzzjiUq87kRItoJQM1Yo8S+Q=
-golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 h1:2dVuKD2vS7b0QIHQbpyTISPd0LeHDbnYEryqj5Q1ug8=
+golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f h1:W3F4c+6OLc6H2lb//N1q4WpJkhzJCK5J6kUi1NTVXfM=
-golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56/go.mod h1:M4RDyNAINzryxdtnbRXRL/OHtkFuWGRjvuhBJpk2IlY=
+golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f/go.mod h1:J1xhfL/vlindoeF/aINzNzt2Bket5bjo9sdOYzOsU80=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.50.0 h1:ucWh9eiCGyDR3vtzso0WMQinm2Dnt8cFMuQa9K33J60=
+golang.org/x/net v0.53.0 h1:d+qAbo5L0orcWAr0a9JweQpjXF19LMXJE8Ey7hwOdUA=
-golang.org/x/net v0.50.0/go.mod h1:UgoSli3F/pBgdJBHCTc+tp3gmrU4XswgGRgtnwWTfyM=
+golang.org/x/net v0.53.0/go.mod h1:JvMuJH7rrdiCfbeHoo3fCQU24Lf5JJwT9W3sJFulfgs=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -107,14 +107,14 @@ golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI=
-golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
+golang.org/x/term v0.42.0 h1:UiKe+zDFmJobeJ5ggPwOshJIVt6/Ft0rcfrXZDLWAWY=
-golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=
+golang.org/x/term v0.42.0/go.mod h1:Dq/D+snpsbazcBG5+F9Q1n2rXV8Ma+71xEjTRufARgY=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
+golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg=
-golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
+golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

vendor/github.com/go-git/go-billy/v5/README.md

@@ -5,6 +5,10 @@ Billy implements an interface based on the `os` standard library, allowing to de
 
 Billy was born as part of [go-git/go-git](https://github.com/go-git/go-git) project.
 
+## Version support
+
+go-billy v5 is in maintenance mode. Users should upgrade to [go-billy v6](https://pkg.go.dev/github.com/go-git/go-billy/v6) where possible.
+
 ## Installation
 
 ```go

vendor/github.com/go-git/go-billy/v5/helper/chroot/chroot.go

@@ -3,19 +3,25 @@ package chroot
 import (
 	"errors"
 	"os"
+	"path"
 	"path/filepath"
 	"strings"
+	"syscall"
 
 	"github.com/go-git/go-billy/v5"
 	"github.com/go-git/go-billy/v5/helper/polyfill"
 )
 
 // ChrootHelper is a helper to implement billy.Chroot.
+// It is not a security boundary, callers that need containment should use a
+// filesystem implementation that enforces paths at the OS boundary instead.
 type ChrootHelper struct {
 	underlying billy.Filesystem
 	base       string
 }
 
+const maxFollowedSymlinks = 8 // Aligns with POSIX_SYMLOOP_MAX
+
 // New creates a new filesystem wrapping up the given 'fs'.
 // The created filesystem has its base in the given ChrootHelperectory of the
 // underlying filesystem.
@@ -34,15 +40,184 @@ func (fs *ChrootHelper) underlyingPath(filename string) (string, error) {
 	return fs.Join(fs.Root(), filename), nil
 }
 
-func isCrossBoundaries(path string) bool {
+func (fs *ChrootHelper) followedPath(filename string, followFinal bool, op string) (string, error) {
-	path = filepath.ToSlash(path)
+	fullpath, err := fs.underlyingPath(filename)
-	path = filepath.Clean(path)
+	if err != nil {
+		return "", err
+	}
 
-	return strings.HasPrefix(path, ".."+string(filepath.Separator))
+	sl, ok := fs.underlying.(billy.Symlink)
+	if !ok {
+		return fullpath, nil
+	}
+
+	rel, err := fs.relativeToRoot(fullpath)
+	if err != nil {
+		return "", err
+	}
+
+	fullpath, err = fs.resolveFollowedPath(rel, followFinal, op, sl)
+	if errors.Is(err, billy.ErrNotSupported) {
+		return fs.underlyingPath(filename)
+	}
+
+	return fullpath, err
+}
+
+func (fs *ChrootHelper) resolveFollowedPath(rel string, followFinal bool, op string, sl billy.Symlink) (string, error) {
+	if rel == "" {
+		return fs.resolveFollowedRoot(followFinal, op, sl)
+	}
+
+	parts := splitRelativePath(rel)
+	resolved := ""
+	followed := 0
+
+	for len(parts) > 0 {
+		part := parts[0]
+		parts = parts[1:]
+
+		currentRel := joinRelativePath(resolved, part)
+		currentPath := fs.Join(fs.Root(), currentRel)
+		if len(parts) == 0 && !followFinal {
+			return currentPath, nil
+		}
+
+		fi, err := sl.Lstat(currentPath)
+		if err != nil {
+			if os.IsNotExist(err) {
+				return fs.Join(fs.Root(), joinRelativePath(append([]string{currentRel}, parts...)...)), nil
+			}
+			return "", err
+		}
+
+		if fi.Mode()&os.ModeSymlink == 0 {
+			resolved = currentRel
+			continue
+		}
+
+		followed++
+		if followed > maxFollowedSymlinks {
+			return "", symlinkLoopError(op, currentPath)
+		}
+
+		target, err := sl.Readlink(currentPath)
+		if err != nil {
+			return "", err
+		}
+
+		targetRel, err := fs.linkTargetRel(currentPath, target)
+		if err != nil {
+			return "", err
+		}
+		if targetRel == currentRel {
+			return "", symlinkLoopError(op, currentPath)
+		}
+
+		parts = append(splitRelativePath(targetRel), parts...)
+		resolved = ""
+	}
+
+	return fs.Join(fs.Root(), resolved), nil
+}
+
+func symlinkLoopError(op, path string) error {
+	return &os.PathError{Op: op, Path: path, Err: syscall.ELOOP}
+}
+
+func (fs *ChrootHelper) resolveFollowedRoot(followFinal bool, op string, sl billy.Symlink) (string, error) {
+	root := fs.Join(fs.Root(), "")
+	if !followFinal {
+		return root, nil
+	}
+
+	fi, err := sl.Lstat(root)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return root, nil
+		}
+		return "", err
+	}
+
+	if fi.Mode()&os.ModeSymlink == 0 {
+		return root, nil
+	}
+
+	target, err := sl.Readlink(root)
+	if err != nil {
+		return "", err
+	}
+
+	targetRel, err := fs.linkTargetRel(root, target)
+	if err != nil {
+		return root, err
+	}
+	if targetRel == "" {
+		return "", symlinkLoopError(op, root)
+	}
+
+	return fs.resolveFollowedPath(targetRel, followFinal, op, sl)
+}
+
+func (fs *ChrootHelper) relativeToRoot(filename string) (string, error) {
+	rel, err := filepath.Rel(filepath.Clean(fs.Root()), filepath.Clean(filename))
+	if err != nil || isCrossBoundaries(rel) {
+		return "", billy.ErrCrossedBoundary
+	}
+
+	if rel == "." {
+		return "", nil
+	}
+	return rel, nil
+}
+
+func (fs *ChrootHelper) linkTargetRel(linkPath, target string) (string, error) {
+	target = filepath.FromSlash(target)
+	if filepath.IsAbs(target) || strings.HasPrefix(target, string(filepath.Separator)) {
+		return fs.relativeToRoot(target)
+	}
+
+	return fs.relativeToRoot(fs.Join(filepath.Dir(linkPath), target))
+}
+
+func splitRelativePath(filename string) []string {
+	filename = filepath.Clean(filename)
+	if filename == "" || filename == "." {
+		return nil
+	}
+
+	return strings.Split(filepath.ToSlash(filename), "/")
+}
+
+func joinRelativePath(elem ...string) string {
+	parts := make([]string, 0, len(elem))
+	for _, part := range elem {
+		if part == "" || part == "." {
+			continue
+		}
+		parts = append(parts, part)
+	}
+
+	if len(parts) == 0 {
+		return ""
+	}
+	return filepath.Join(parts...)
+}
+
+func isCreateExclusive(flag int) bool {
+	return flag&os.O_CREATE != 0 && flag&os.O_EXCL != 0
+}
+
+func isCrossBoundaries(name string) bool {
+	name = filepath.ToSlash(name)
+	name = strings.TrimLeft(name, "/")
+	name = path.Clean(name)
+
+	return name == ".." || strings.HasPrefix(name, "../")
 }
 
 func (fs *ChrootHelper) Create(filename string) (billy.File, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, true, "create")
 	if err != nil {
 		return nil, err
 	}
@@ -56,7 +231,7 @@ func (fs *ChrootHelper) Create(filename string) (billy.File, error) {
 }
 
 func (fs *ChrootHelper) Open(filename string) (billy.File, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, true, "open")
 	if err != nil {
 		return nil, err
 	}
@@ -70,7 +245,7 @@ func (fs *ChrootHelper) Open(filename string) (billy.File, error) {
 }
 
 func (fs *ChrootHelper) OpenFile(filename string, flag int, mode os.FileMode) (billy.File, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, !isCreateExclusive(flag), "open")
 	if err != nil {
 		return nil, err
 	}
@@ -84,12 +259,16 @@ func (fs *ChrootHelper) OpenFile(filename string, flag int, mode os.FileMode) (b
 }
 
 func (fs *ChrootHelper) Stat(filename string) (os.FileInfo, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, true, "stat")
 	if err != nil {
 		return nil, err
 	}
 
-	return fs.underlying.Stat(fullpath)
+	fi, err := fs.underlying.Stat(fullpath)
+	if err != nil {
+		return nil, err
+	}
+	return fileInfo{FileInfo: fi, name: filepath.Base(filename)}, nil
 }
 
 func (fs *ChrootHelper) Rename(from, to string) error {
@@ -135,7 +314,7 @@ func (fs *ChrootHelper) TempFile(dir, prefix string) (billy.File, error) {
 }
 
 func (fs *ChrootHelper) ReadDir(path string) ([]os.FileInfo, error) {
-	fullpath, err := fs.underlyingPath(path)
+	fullpath, err := fs.followedPath(path, true, "readdir")
 	if err != nil {
 		return nil, err
 	}
@@ -241,6 +420,11 @@ type file struct {
 	name string
 }
 
+type fileInfo struct {
+	os.FileInfo
+	name string
+}
+
 func newFile(fs billy.Filesystem, f billy.File, filename string) billy.File {
 	filename = fs.Join(fs.Root(), filename)
 	filename, _ = filepath.Rel(fs.Root(), filename)
@@ -254,3 +438,7 @@ func newFile(fs billy.Filesystem, f billy.File, filename string) billy.File {
 func (f *file) Name() string {
 	return f.name
 }
+
+func (fi fileInfo) Name() string {
+	return fi.name
+}

vendor/github.com/go-git/go-billy/v5/helper/polyfill/polyfill.go

@@ -13,7 +13,7 @@ type Polyfill struct {
 	c capabilities
 }
 
-type capabilities struct{ tempfile, dir, symlink, chroot bool }
+type capabilities struct{ tempfile, dir, symlink, chroot, chmod bool }
 
 // New creates a new filesystem wrapping up 'fs' the intercepts all the calls
 // made and errors if fs doesn't implement any of the billy interfaces.
@@ -28,6 +28,7 @@ func New(fs billy.Basic) billy.Filesystem {
 	_, h.c.dir = h.Basic.(billy.Dir)
 	_, h.c.symlink = h.Basic.(billy.Symlink)
 	_, h.c.chroot = h.Basic.(billy.Chroot)
+	_, h.c.chmod = h.Basic.(billy.Chmod)
 	return h
 }
 
@@ -87,6 +88,14 @@ func (h *Polyfill) Chroot(path string) (billy.Filesystem, error) {
 	return h.Basic.(billy.Chroot).Chroot(path)
 }
 
+func (h *Polyfill) Chmod(path string, mode os.FileMode) error {
+	if !h.c.chmod {
+		return billy.ErrNotSupported
+	}
+
+	return h.Basic.(billy.Chmod).Chmod(path, mode)
+}
+
 func (h *Polyfill) Root() string {
 	if !h.c.chroot {
 		return string(filepath.Separator)

vendor/github.com/go-git/go-billy/v5/osfs/os.go

@@ -24,6 +24,9 @@ var Default = &ChrootOS{}
 // New returns a new OS filesystem.
 // By default paths are deduplicated, but still enforced
 // under baseDir. For more info refer to WithDeduplicatePath.
+//
+// New returns ChrootOS by default for v5 compatibility. Users should prefer
+// New with WithBoundOS.
 func New(baseDir string, opts ...Option) billy.Filesystem {
 	o := &options{
 		deduplicatePath: true,
@@ -47,6 +50,8 @@ func WithBoundOS() Option {
 }
 
 // WithChrootOS returns the option of using a Chroot filesystem OS.
+//
+// Deprecated: use WithBoundOS instead.
 func WithChrootOS() Option {
 	return func(o *options) {
 		o.Type = ChrootOSFS

vendor/github.com/go-git/go-billy/v5/osfs/os_bound.go

@@ -20,6 +20,7 @@
 package osfs
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -29,6 +30,31 @@ import (
 	"github.com/go-git/go-billy/v5"
 )
 
+var (
+	// ErrBaseDirCannotBeRemoved is returned when removing the BoundOS base dir.
+	ErrBaseDirCannotBeRemoved = errors.New("base dir cannot be removed")
+
+	// ErrBaseDirCannotBeRenamed is returned when renaming the BoundOS base dir.
+	ErrBaseDirCannotBeRenamed = errors.New("base dir cannot be renamed")
+
+	dotPrefixes   = dotPathPrefixes()
+	dotSeparators = dotPathSeparators()
+)
+
+func dotPathPrefixes() []string {
+	if filepath.Separator == '\\' {
+		return []string{"./", ".\\"}
+	}
+	return []string{"./"}
+}
+
+func dotPathSeparators() string {
+	if filepath.Separator == '\\' {
+		return `/\`
+	}
+	return `/`
+}
+
 // BoundOS is a fs implementation based on the OS filesystem which is bound to
 // a base dir.
 // Prefer this fs implementation over ChrootOS.
@@ -54,6 +80,7 @@ func (fs *BoundOS) Create(filename string) (billy.File, error) {
 }
 
 func (fs *BoundOS) OpenFile(filename string, flag int, perm os.FileMode) (billy.File, error) {
+	filename = fs.expandDot(filename)
 	fn, err := fs.abs(filename)
 	if err != nil {
 		return nil, err
@@ -62,6 +89,7 @@ func (fs *BoundOS) OpenFile(filename string, flag int, perm os.FileMode) (billy.
 }
 
 func (fs *BoundOS) ReadDir(path string) ([]os.FileInfo, error) {
+	path = fs.expandDot(path)
 	dir, err := fs.abs(path)
 	if err != nil {
 		return nil, err
@@ -71,6 +99,12 @@ func (fs *BoundOS) ReadDir(path string) ([]os.FileInfo, error) {
 }
 
 func (fs *BoundOS) Rename(from, to string) error {
+	if fs.isBaseDir(from) {
+		return ErrBaseDirCannotBeRenamed
+	}
+	from = fs.expandDot(from)
+	to = fs.expandDot(to)
+
 	f, err := fs.abs(from)
 	if err != nil {
 		return err
@@ -89,6 +123,7 @@ func (fs *BoundOS) Rename(from, to string) error {
 }
 
 func (fs *BoundOS) MkdirAll(path string, perm os.FileMode) error {
+	path = fs.expandDot(path)
 	dir, err := fs.abs(path)
 	if err != nil {
 		return err
@@ -101,6 +136,7 @@ func (fs *BoundOS) Open(filename string) (billy.File, error) {
 }
 
 func (fs *BoundOS) Stat(filename string) (os.FileInfo, error) {
+	filename = fs.expandDot(filename)
 	filename, err := fs.abs(filename)
 	if err != nil {
 		return nil, err
@@ -109,6 +145,11 @@ func (fs *BoundOS) Stat(filename string) (os.FileInfo, error) {
 }
 
 func (fs *BoundOS) Remove(filename string) error {
+	if fs.isBaseDir(filename) {
+		return ErrBaseDirCannotBeRemoved
+	}
+	filename = fs.expandDot(filename)
+
 	fn, err := fs.abs(filename)
 	if err != nil {
 		return err
@@ -122,10 +163,19 @@ func (fs *BoundOS) Remove(filename string) error {
 func (fs *BoundOS) TempFile(dir, prefix string) (billy.File, error) {
 	if dir != "" {
 		var err error
+		dir = fs.expandDot(dir)
 		dir, err = fs.abs(dir)
 		if err != nil {
 			return nil, err
 		}
+
+		_, err = os.Stat(dir)
+		if err != nil && os.IsNotExist(err) {
+			err = os.MkdirAll(dir, defaultDirectoryMode)
+			if err != nil {
+				return nil, err
+			}
+		}
 	}
 
 	return tempFile(dir, prefix)
@@ -136,6 +186,11 @@ func (fs *BoundOS) Join(elem ...string) string {
 }
 
 func (fs *BoundOS) RemoveAll(path string) error {
+	if fs.isBaseDir(path) {
+		return ErrBaseDirCannotBeRemoved
+	}
+	path = fs.expandDot(path)
+
 	dir, err := fs.abs(path)
 	if err != nil {
 		return err
@@ -144,6 +199,7 @@ func (fs *BoundOS) RemoveAll(path string) error {
 }
 
 func (fs *BoundOS) Symlink(target, link string) error {
+	link = fs.expandDot(link)
 	ln, err := fs.abs(link)
 	if err != nil {
 		return err
@@ -156,6 +212,7 @@ func (fs *BoundOS) Symlink(target, link string) error {
 }
 
 func (fs *BoundOS) Lstat(filename string) (os.FileInfo, error) {
+	filename = fs.expandDot(filename)
 	filename = filepath.Clean(filename)
 	if !filepath.IsAbs(filename) {
 		filename = filepath.Join(fs.baseDir, filename)
@@ -167,6 +224,7 @@ func (fs *BoundOS) Lstat(filename string) (os.FileInfo, error) {
 }
 
 func (fs *BoundOS) Readlink(link string) (string, error) {
+	link = fs.expandDot(link)
 	if !filepath.IsAbs(link) {
 		link = filepath.Clean(filepath.Join(fs.baseDir, link))
 	}
@@ -177,6 +235,7 @@ func (fs *BoundOS) Readlink(link string) (string, error) {
 }
 
 func (fs *BoundOS) Chmod(path string, mode os.FileMode) error {
+	path = fs.expandDot(path)
 	abspath, err := fs.abs(path)
 	if err != nil {
 		return err
@@ -191,7 +250,7 @@ func (fs *BoundOS) Chroot(path string) (billy.Filesystem, error) {
 	if err != nil {
 		return nil, err
 	}
-	return New(joined), nil
+	return New(joined, WithBoundOS()), nil
 }
 
 // Root returns the current base dir of the billy.Filesystem.
@@ -212,6 +271,37 @@ func (fs *BoundOS) createDir(fullpath string) error {
 	return nil
 }
 
+func (fs *BoundOS) expandDot(path string) string {
+	if path == "." {
+		return fs.baseDir
+	}
+	for _, prefix := range dotPrefixes {
+		if strings.HasPrefix(path, prefix) {
+			path = strings.TrimLeft(strings.TrimPrefix(path, prefix), dotSeparators)
+			if path == "" {
+				return fs.baseDir
+			}
+			return path
+		}
+	}
+	return path
+}
+
+func (fs *BoundOS) isBaseDir(path string) bool {
+	if path == "" || filepath.Clean(path) == "." {
+		return true
+	}
+	path = fs.expandDot(path)
+	if filepath.Clean(path) == filepath.Clean(fs.baseDir) {
+		return true
+	}
+	abspath, err := fs.abs(path)
+	if err != nil {
+		return false
+	}
+	return filepath.Clean(abspath) == filepath.Clean(fs.baseDir)
+}
+
 // abs transforms filename to an absolute path, taking into account the base dir.
 // Relative paths won't be allowed to ascend the base dir, so `../file` will become
 // `/working-dir/file`.
@@ -225,7 +315,7 @@ func (fs *BoundOS) abs(filename string) (string, error) {
 
 	path, err := securejoin.SecureJoin(fs.baseDir, filename)
 	if err != nil {
-		return "", nil
+		return "", err
 	}
 
 	if fs.deduplicatePath {
@@ -238,24 +328,12 @@ func (fs *BoundOS) abs(filename string) (string, error) {
 	return path, nil
 }
 
-// insideBaseDir checks whether filename is located within
-// the fs.baseDir.
-func (fs *BoundOS) insideBaseDir(filename string) (bool, error) {
-	if filename == fs.baseDir {
-		return true, nil
-	}
-	if !strings.HasPrefix(filename, fs.baseDir+string(filepath.Separator)) {
-		return false, fmt.Errorf("path outside base dir")
-	}
-	return true, nil
-}
-
 // insideBaseDirEval checks whether filename is contained within
 // a dir that is within the fs.baseDir, by first evaluating any symlinks
 // that either filename or fs.baseDir may contain.
 func (fs *BoundOS) insideBaseDirEval(filename string) (bool, error) {
 	// "/" contains all others.
-	if fs.baseDir == "/" {
+	if fs.baseDir == "/" || fs.baseDir == filename {
 		return true, nil
 	}
 	dir, err := filepath.EvalSymlinks(filepath.Dir(filename))

vendor/github.com/go-git/go-billy/v5/osfs/os_chroot.go

@@ -14,6 +14,8 @@ import (
 // ChrootOS is a legacy filesystem based on a "soft chroot" of the os filesystem.
 // Although this is still the default os filesystem, consider using BoundOS instead.
 //
+// Deprecated: use New with WithBoundOS instead.
+//
 // Behaviours of note:
 //  1. A "soft chroot" translates the base dir to "/" for the purposes of the
 //     fs abstraction.
@@ -24,6 +26,14 @@ import (
 type ChrootOS struct{}
 
 func newChrootOS(baseDir string) billy.Filesystem {
+	if baseDir != "" {
+		resolved, err := filepath.EvalSymlinks(baseDir)
+		if err != nil {
+			return chroot.New(&ChrootOS{}, baseDir)
+		}
+		baseDir = resolved
+	}
+
 	return chroot.New(&ChrootOS{}, baseDir)
 }
 

vendor/github.com/go-git/go-billy/v5/util/util.go

@@ -16,8 +16,6 @@ import (
 // can but returns the first error it encounters. If the path does not exist,
 // RemoveAll returns nil (no error).
 func RemoveAll(fs billy.Basic, path string) error {
-	fs, path = getUnderlyingAndPath(fs, path)
-
 	if r, ok := fs.(removerAll); ok {
 		return r.RemoveAll(path)
 	}
@@ -39,7 +37,7 @@ func removeAll(fs billy.Basic, path string) error {
 	}
 
 	// Otherwise, is this a directory we need to recurse into?
-	dir, serr := fs.Stat(path)
+	dir, serr := lstat(fs, path)
 	if serr != nil {
 		if errors.Is(serr, os.ErrNotExist) {
 			return nil
@@ -48,8 +46,8 @@ func removeAll(fs billy.Basic, path string) error {
 		return serr
 	}
 
-	if !dir.IsDir() {
+	if dir.Mode()&os.ModeSymlink != 0 || !dir.IsDir() {
-		// Not a directory; return the error from Remove.
+		// Not a directory we should recurse into; return the error from Remove.
 		return err
 	}
 
@@ -62,7 +60,7 @@ func removeAll(fs billy.Basic, path string) error {
 	fis, err := dirfs.ReadDir(path)
 	if err != nil {
 		if errors.Is(err, os.ErrNotExist) {
-			// Race. It was deleted between the Lstat and Open.
+			// Race. It was deleted between the Lstat and ReadDir.
 			// Return nil per RemoveAll's docs.
 			return nil
 		}
@@ -91,7 +89,18 @@ func removeAll(fs billy.Basic, path string) error {
 	}
 
 	return err
+}
 
+func lstat(filesystem billy.Basic, path string) (os.FileInfo, error) {
+	if sl, ok := filesystem.(billy.Symlink); ok {
+		// Avoid following a symlink substituted after the initial Remove fails.
+		fi, err := sl.Lstat(path)
+		if err == nil || !errors.Is(err, billy.ErrNotSupported) {
+			return fi, err
+		}
+	}
+
+	return filesystem.Stat(path)
 }
 
 // WriteFile writes data to a file named by filename in the given filesystem.
@@ -123,8 +132,10 @@ func WriteFile(fs billy.Basic, filename string, data []byte, perm os.FileMode) (
 // We generate random temporary file names so that there's a good
 // chance the file doesn't exist yet - keeps the number of tries in
 // TempFile to a minimum.
-var rand uint32
+var (
-var randmu sync.Mutex
+	rand   uint32
+	randmu sync.Mutex
+)
 
 func reseed() uint32 {
 	return uint32(time.Now().UnixNano() + int64(os.Getpid()))
@@ -220,22 +231,6 @@ func getTempDir(fs billy.Basic) string {
 	return ".tmp"
 }
 
-type underlying interface {
-	Underlying() billy.Basic
-}
-
-func getUnderlyingAndPath(fs billy.Basic, path string) (billy.Basic, string) {
-	u, ok := fs.(underlying)
-	if !ok {
-		return fs, path
-	}
-	if ch, ok := fs.(billy.Chroot); ok {
-		path = fs.Join(ch.Root(), path)
-	}
-
-	return u.Underlying(), path
-}
-
 // ReadFile reads the named file and returns the contents from the given filesystem.
 // A successful call returns err == nil, not err == EOF.
 // Because ReadFile reads the whole file, it does not treat an EOF from Read

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/decoder.go

@@ -91,8 +91,8 @@ func readVersion(idx *MemoryIndex, r io.Reader) error {
 		return err
 	}
 
-	if v > VersionSupported {
+	if v != VersionSupported {
-		return ErrUnsupportedVersion
+		return fmt.Errorf("%w: v%d", ErrUnsupportedVersion, v)
 	}
 
 	idx.Version = v
@@ -106,6 +106,10 @@ func readFanout(idx *MemoryIndex, r io.Reader) error {
 			return err
 		}
 
+		if k > 0 && n < idx.Fanout[k-1] {
+			return fmt.Errorf("%w: fanout table is not monotonically non-decreasing at entry %d", ErrMalformedIdxFile, k)
+		}
+
 		idx.Fanout[k] = n
 		idx.FanoutMapping[k] = noMapping
 	}
@@ -155,7 +159,7 @@ func readCRC32(idx *MemoryIndex, r io.Reader) error {
 }
 
 func readOffsets(idx *MemoryIndex, r io.Reader) error {
-	var o64cnt int
+	var o64cnt int64
 	for k := 0; k < fanout; k++ {
 		if pos := idx.FanoutMapping[k]; pos != noMapping {
 			if _, err := io.ReadFull(r, idx.Offset32[pos]); err != nil {

vendor/github.com/go-git/go-git/v5/plumbing/format/index/decoder.go

@@ -4,8 +4,8 @@ import (
 	"bufio"
 	"bytes"
 	"errors"
+	"fmt"
 	"io"
-
 	"strconv"
 	"time"
 
@@ -26,12 +26,14 @@ var (
 	ErrInvalidChecksum = errors.New("invalid checksum")
 	// ErrUnknownExtension is returned when an index extension is encountered that is considered mandatory
 	ErrUnknownExtension = errors.New("unknown extension")
+	// ErrMalformedIndexFile is returned when the index file contents are
+	// structurally invalid.
+	ErrMalformedIndexFile = errors.New("index decoder: malformed index file")
 )
 
 const (
 	entryHeaderLength = 62
 	entryExtended     = 0x4000
-	entryValid        = 0x8000
 	nameMask          = 0xfff
 	intentToAddMask   = 1 << 13
 	skipWorkTreeMask  = 1 << 14
@@ -140,33 +142,55 @@ func (d *Decoder) readEntry(idx *Index) (*Entry, error) {
 		e.SkipWorktree = extended&skipWorkTreeMask != 0
 	}
 
-	if err := d.readEntryName(idx, e, flags); err != nil {
+	nameConsumed, err := d.readEntryName(idx, e, flags)
+	if err != nil {
 		return nil, err
 	}
 
-	return e, d.padEntry(idx, e, read)
+	return e, d.padEntry(idx, e, read, nameConsumed)
 }
 
-func (d *Decoder) readEntryName(idx *Index, e *Entry, flags uint16) error {
+// readEntryName reads the entry path and sets e.Name. It returns the
-	var name string
+// number of bytes consumed from the stream for the name portion.
-	var err error
+func (d *Decoder) readEntryName(idx *Index, e *Entry, flags uint16) (int, error) {
-
 	switch idx.Version {
 	case 2, 3:
-		len := flags & nameMask
+		nameLen := flags & nameMask
-		name, err = d.doReadEntryName(len)
+		name, consumed, err := d.doReadEntryName(nameLen)
-	case 4:
-		name, err = d.doReadEntryNameV4()
-	default:
-		return ErrUnsupportedVersion
-	}
-
 		if err != nil {
-		return err
+			return 0, err
+		}
+		e.Name = name
+		return consumed, nil
+	case 4:
+		name, err := d.doReadEntryNameV4()
+		if err != nil {
+			return 0, err
+		}
+		e.Name = name
+		return 0, nil // V4 has no padding; consumed count unused
+	default:
+		return 0, ErrUnsupportedVersion
+	}
 }
 
-	e.Name = name
+// doReadEntryName reads the entry path for V2/V3 indexes. It returns the
-	return nil
+// name, the number of bytes consumed from the stream, and any error.
+// When nameLen equals nameMask (0xFFF), the name was too long to fit in
+// the 12-bit field and the real length is found by scanning for the NUL
+// terminator — matching C Git's strlen(name) fallback in create_from_disk.
+func (d *Decoder) doReadEntryName(nameLen uint16) (string, int, error) {
+	if nameLen == nameMask {
+		name, err := binary.ReadUntil(d.r, '\x00')
+		if err != nil {
+			return "", 0, err
+		}
+		return string(name), len(name) + 1, nil // +1 for the consumed NUL delimiter
+	}
+
+	name := make([]byte, nameLen)
+	_, err := io.ReadFull(d.r, name)
+	return string(name), int(nameLen), err
 }
 
 func (d *Decoder) doReadEntryNameV4() (string, error) {
@@ -177,7 +201,14 @@ func (d *Decoder) doReadEntryNameV4() (string, error) {
 
 	var base string
 	if d.lastEntry != nil {
+		if l < 0 || int(l) > len(d.lastEntry.Name) {
+			return "", fmt.Errorf("%w: invalid V4 entry name strip length %d (previous name length: %d)",
+				ErrMalformedIndexFile, l, len(d.lastEntry.Name))
+		}
 		base = d.lastEntry.Name[:len(d.lastEntry.Name)-int(l)]
+	} else if l > 0 {
+		return "", fmt.Errorf("%w: non-zero strip length %d on first V4 entry",
+			ErrMalformedIndexFile, l)
 	}
 
 	name, err := binary.ReadUntil(d.r, '\x00')
@@ -188,25 +219,24 @@ func (d *Decoder) doReadEntryNameV4() (string, error) {
 	return base + string(name), nil
 }
 
-func (d *Decoder) doReadEntryName(len uint16) (string, error) {
+// padEntry discards NUL padding bytes that follow each V2/V3 entry on
-	name := make([]byte, len)
+// disk. nameConsumed is the number of stream bytes consumed while reading
-	_, err := io.ReadFull(d.r, name)
+// the entry name (which may exceed len(e.Name) when a NUL terminator was
-
+// consumed for long names where the 12-bit length field overflowed).
-	return string(name), err
+func (d *Decoder) padEntry(idx *Index, e *Entry, read, nameConsumed int) error {
-}
-
-// Index entries are padded out to the next 8 byte alignment
-// for historical reasons related to how C Git read the files.
-func (d *Decoder) padEntry(idx *Index, e *Entry, read int) error {
 	if idx.Version == 4 {
 		return nil
 	}
 
 	entrySize := read + len(e.Name)
 	padLen := 8 - entrySize%8
+	padLen -= nameConsumed - len(e.Name)
+	if padLen > 0 {
 		_, err := io.CopyN(io.Discard, d.r, int64(padLen))
 		return err
 	}
+	return nil
+}
 
 func (d *Decoder) readExtensions(idx *Index) error {
 	// TODO: support 'Split index' and 'Untracked cache' extensions, take in
@@ -312,7 +342,7 @@ func (d *Decoder) readChecksum(expected []byte) error {
 }
 
 func validateHeader(r io.Reader) (version uint32, err error) {
-	var s = make([]byte, 4)
+	s := make([]byte, 4)
 	if _, err := io.ReadFull(r, s); err != nil {
 		return 0, err
 	}
@@ -376,24 +406,26 @@ func (d *treeExtensionDecoder) readEntry() (*TreeEntry, error) {
 		return nil, err
 	}
 
-	// An entry can be in an invalidated state and is represented by having a
-	// negative number in the entry_count field.
-	if i == -1 {
-		return nil, nil
-	}
-
 	e.Entries = i
 	trees, err := binary.ReadUntil(d.r, '\n')
 	if err != nil {
 		return nil, err
 	}
 
-	i, err = strconv.Atoi(string(trees))
+	subtrees, err := strconv.Atoi(string(trees))
 	if err != nil {
 		return nil, err
 	}
 
-	e.Trees = i
+	e.Trees = subtrees
+
+	// An entry can be in an invalidated state and is represented by having a
+	// negative number in the entry_count field. In this case, there is no
+	// object name and the next entry starts immediately after the newline.
+	if i < 0 {
+		return nil, nil
+	}
+
 	_, err = io.ReadFull(d.r, e.Hash[:])
 	if err != nil {
 		return nil, err

vendor/github.com/go-git/go-git/v5/plumbing/format/index/encoder.go

@@ -5,9 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"path"
 	"sort"
-	"strings"
 	"time"
 
 	"github.com/go-git/go-git/v5/plumbing/hash"
@@ -160,26 +158,39 @@ func (e *Encoder) encodeEntryName(entry *Entry) error {
 }
 
 func (e *Encoder) encodeEntryNameV4(entry *Entry) error {
-	name := entry.Name
+	// V4 prefix compression: find the longest common prefix between the
-	l := 0
+	// previous entry's name and the current one. The strip length tells
+	// the decoder how many bytes to remove from the end of the previous
+	// name, and the suffix is the remainder of the current name.
+	prefix := 0
 	if e.lastEntry != nil {
-		dir := path.Dir(e.lastEntry.Name) + "/"
+		prefix = commonPrefixLen(e.lastEntry.Name, entry.Name)
-		if strings.HasPrefix(entry.Name, dir) {
-			l = len(e.lastEntry.Name) - len(dir)
-			name = strings.TrimPrefix(entry.Name, dir)
-		} else {
-			l = len(e.lastEntry.Name)
 	}
+	stripLen := 0
+	if e.lastEntry != nil {
+		stripLen = len(e.lastEntry.Name) - prefix
 	}
 
 	e.lastEntry = entry
 
-	err := binary.WriteVariableWidthInt(e.w, int64(l))
+	if err := binary.WriteVariableWidthInt(e.w, int64(stripLen)); err != nil {
-	if err != nil {
 		return err
 	}
 
-	return binary.Write(e.w, []byte(name+string('\x00')))
+	suffix := entry.Name[prefix:]
+	return binary.Write(e.w, append([]byte(suffix), '\x00'))
+}
+
+// commonPrefixLen returns the length of the longest common byte prefix
+// between a and b.
+func commonPrefixLen(a, b string) int {
+	n := min(len(b), len(a))
+	for i := range n {
+		if a[i] != b[i] {
+			return i
+		}
+	}
+	return n
 }
 
 func (e *Encoder) encodeRawExtension(signature string, data []byte) error {

vendor/github.com/go-git/go-git/v5/plumbing/format/index/index.go

@@ -54,6 +54,8 @@ type Index struct {
 	ResolveUndo *ResolveUndo
 	// EndOfIndexEntry represents the 'End of Index Entry' extension
 	EndOfIndexEntry *EndOfIndexEntry
+	// ModTime is the modification time of the index file
+	ModTime time.Time
 }
 
 // Add creates a new Entry and returns it. The caller should first check that

vendor/github.com/go-git/go-git/v5/plumbing/object/commit.go

@@ -5,7 +5,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io"
+	"slices"
 	"strings"
 
 	"github.com/ProtonMail/go-crypto/openpgp"
@@ -20,6 +20,7 @@ const (
 	beginpgp       string = "-----BEGIN PGP SIGNATURE-----"
 	endpgp         string = "-----END PGP SIGNATURE-----"
 	headerpgp      string = "gpgsig"
+	headerpgp256   string = "gpgsig-sha256"
 	headerencoding string = "encoding"
 
 	// https://github.com/git/git/blob/bcb6cae2966cc407ca1afc77413b3ef11103c175/Documentation/gitformat-signature.txt#L153
@@ -41,6 +42,11 @@ type MessageEncoding string
 // in time, such as a timestamp, the author of the changes since the last
 // commit, a pointer to the previous commit(s), etc.
 // http://shafiulazam.com/gitbook/1_the_git_object_model.html
+//
+// When a Commit is populated by Decode it retains a reference to the source
+// plumbing.EncodedObject so that EncodeWithoutSignature can reproduce the
+// exact bytes the signature was computed over. Refer to EncodeWithoutSignature
+// for more information.
 type Commit struct {
 	// Hash of the commit object.
 	Hash plumbing.Hash
@@ -66,6 +72,9 @@ type Commit struct {
 	ExtraHeaders []ExtraHeader
 
 	s storer.EncodedObjectStorer
+	// src holds the encoded object this Commit was decoded from, used by
+	// EncodeWithoutSignature to recover the canonical signed bytes.
+	src plumbing.EncodedObject
 }
 
 // ExtraHeader holds any non-standard header
@@ -181,6 +190,11 @@ func (c *Commit) NumParents() int {
 
 var ErrParentNotFound = errors.New("commit parent not found")
 
+// ErrMalformedCommit is returned when a commit object cannot be decoded
+// because its standard headers (tree, parent, author, committer) are missing,
+// duplicated, or out of order.
+var ErrMalformedCommit = errors.New("malformed commit")
+
 // Parent returns the ith parent of a commit.
 func (c *Commit) Parent(i int) (*Commit, error) {
 	if len(c.ParentHashes) == 0 || i > len(c.ParentHashes)-1 {
@@ -227,14 +241,23 @@ func (c *Commit) Type() plumbing.ObjectType {
 	return plumbing.CommitObject
 }
 
+func (c *Commit) reset() {
+	storer := c.s
+	*c = Commit{
+		Encoding: defaultUtf8CommitMessageEncoding,
+		s:        storer,
+	}
+}
+
 // Decode transforms a plumbing.EncodedObject into a Commit struct.
 func (c *Commit) Decode(o plumbing.EncodedObject) (err error) {
 	if o.Type() != plumbing.CommitObject {
 		return ErrUnsupportedObject
 	}
 
+	c.reset()
 	c.Hash = o.Hash()
-	c.Encoding = defaultUtf8CommitMessageEncoding
+	c.src = o
 
 	reader, err := o.Reader()
 	if err != nil {
@@ -245,97 +268,17 @@ func (c *Commit) Decode(o plumbing.EncodedObject) (err error) {
 	r := sync.GetBufioReader(reader)
 	defer sync.PutBufioReader(r)
 
-	var message bool
+	s := &commitScanner{r: r, c: c}
-	var mergetag bool
+	for state := scanTree; state != nil; {
-	var pgpsig bool
+		state, err = state(s)
-	var msgbuf bytes.Buffer
+		if err != nil {
-	var extraheader *ExtraHeader = nil
-	for {
-		line, err := r.ReadBytes('\n')
-		if err != nil && err != io.EOF {
 			return err
 		}
-
-		if mergetag {
-			if len(line) > 0 && line[0] == ' ' {
-				line = bytes.TrimLeft(line, " ")
-				c.MergeTag += string(line)
-				continue
-			} else {
-				mergetag = false
 	}
+	if !s.sawTree {
+		return fmt.Errorf("%w: missing tree header", ErrMalformedCommit)
 	}
-
+	c.Message = s.msgbuf.String()
-		if pgpsig {
-			if len(line) > 0 && line[0] == ' ' {
-				line = bytes.TrimLeft(line, " ")
-				c.PGPSignature += string(line)
-				continue
-			} else {
-				pgpsig = false
-			}
-		}
-
-		if extraheader != nil {
-			if len(line) > 0 && line[0] == ' ' {
-				extraheader.Value += string(line[1:])
-				continue
-			} else {
-				extraheader.Value = strings.TrimRight(extraheader.Value, "\n")
-				c.ExtraHeaders = append(c.ExtraHeaders, *extraheader)
-				extraheader = nil
-			}
-		}
-
-		if !message {
-			original_line := line
-			line = bytes.TrimSpace(line)
-			if len(line) == 0 {
-				message = true
-				continue
-			}
-
-			split := bytes.SplitN(line, []byte{' '}, 2)
-
-			var data []byte
-			if len(split) == 2 {
-				data = split[1]
-			}
-
-			switch string(split[0]) {
-			case "tree":
-				c.TreeHash = plumbing.NewHash(string(data))
-			case "parent":
-				c.ParentHashes = append(c.ParentHashes, plumbing.NewHash(string(data)))
-			case "author":
-				c.Author.Decode(data)
-			case "committer":
-				c.Committer.Decode(data)
-			case headermergetag:
-				c.MergeTag += string(data) + "\n"
-				mergetag = true
-			case headerencoding:
-				c.Encoding = MessageEncoding(data)
-			case headerpgp:
-				c.PGPSignature += string(data) + "\n"
-				pgpsig = true
-			default:
-				h, maybecontinued := parseExtraHeader(original_line)
-				if maybecontinued {
-					extraheader = &h
-				} else {
-					c.ExtraHeaders = append(c.ExtraHeaders, h)
-				}
-			}
-		} else {
-			msgbuf.Write(line)
-		}
-
-		if err == io.EOF {
-			break
-		}
-	}
-	c.Message = msgbuf.String()
 	return nil
 }
 
@@ -344,11 +287,73 @@ func (c *Commit) Encode(o plumbing.EncodedObject) error {
 	return c.encode(o, true)
 }
 
-// EncodeWithoutSignature export a Commit into a plumbing.EncodedObject without the signature (correspond to the payload of the PGP signature).
+// EncodeWithoutSignature exports a Commit into a plumbing.EncodedObject
+// without any signature headers, producing the payload that PGP/GPG
+// signatures are computed over.
+//
+// Behaviour depends on how the Commit was created:
+//
+//   - For Commits populated by Decode whose exported fields still match the
+//     source object, the payload is streamed from the raw source bytes with
+//     gpgsig and gpgsig-sha256 headers (and their continuation lines)
+//     stripped verbatim. This preserves the exact bytes the signature was
+//     computed over, regardless of any normalization performed by Decode.
+//
+//   - For Commits constructed in memory, or for decoded Commits whose
+//     exported fields have been mutated, the payload is derived from the
+//     current struct fields. Mutation is detected by re-decoding the source
+//     object and comparing exported fields; if any differ, the in-memory
+//     representation prevails.
 func (c *Commit) EncodeWithoutSignature(o plumbing.EncodedObject) error {
+	if c.matchesSource() {
+		return stripObjectSignatures(o, c.src, plumbing.CommitObject)
+	}
 	return c.encode(o, false)
 }
 
+// matchesSource reports whether c.src is set and re-decoding it produces a
+// Commit whose payload-affecting exported fields are identical to those of
+// c. It is the auto-detection used by EncodeWithoutSignature to decide
+// between the raw bytes and the struct-encoded payload.
+//
+// PGPSignature is intentionally excluded from the comparison: neither path
+// emits it, so mutating it must not trigger a switch to struct-encode (which
+// would change the byte layout the caller is trying to verify against).
+func (c *Commit) matchesSource() bool {
+	if c.src == nil {
+		return false
+	}
+	fresh := &Commit{}
+	if err := fresh.Decode(c.src); err != nil {
+		return false
+	}
+	return c.Hash == fresh.Hash &&
+		signatureEqual(c.Author, fresh.Author) &&
+		signatureEqual(c.Committer, fresh.Committer) &&
+		c.MergeTag == fresh.MergeTag &&
+		c.Message == fresh.Message &&
+		c.TreeHash == fresh.TreeHash &&
+		c.Encoding == fresh.Encoding &&
+		slices.Equal(c.ParentHashes, fresh.ParentHashes) &&
+		slices.Equal(c.ExtraHeaders, fresh.ExtraHeaders)
+}
+
+func signatureEqual(a, b Signature) bool {
+	return a.Name == b.Name &&
+		a.Email == b.Email &&
+		a.When.Unix() == b.When.Unix() &&
+		a.When.Format("-0700") == b.When.Format("-0700")
+}
+
+func isStandardHeader(key string) bool {
+	switch key {
+	case "tree", "parent", "author", "committer",
+		headerencoding, headermergetag, headerpgp, headerpgp256:
+		return true
+	}
+	return false
+}
+
 func (c *Commit) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	o.SetType(plumbing.CommitObject)
 	w, err := o.Writer()
@@ -407,7 +412,9 @@ func (c *Commit) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	}
 
 	for _, header := range c.ExtraHeaders {
-		
+		if isStandardHeader(header.Key) {
+			continue
+		}
 		if _, err = fmt.Fprintf(w, "\n%s", header); err != nil {
 			return err
 		}
@@ -478,9 +485,21 @@ func (c *Commit) String() string {
 	)
 }
 
+// ErrMultipleSignatures is returned by Verify when the commit carries more
+// than one armored signature block. Mirrors upstream's parse_gpg_output
+// rejection of GOODSIG/BADSIG status lines after the first
+// (gpg-interface.c:257-269): multi-signature commits are intentionally
+// unsupported because their provenance cannot be reduced to a single
+// authoritative signer.
+var ErrMultipleSignatures = errors.New("commit has multiple signatures")
+
 // Verify performs PGP verification of the commit with a provided armored
 // keyring and returns openpgp.Entity associated with verifying key on success.
 func (c *Commit) Verify(armoredKeyRing string) (*openpgp.Entity, error) {
+	if countSignatureBlocks([]byte(c.PGPSignature)) > 1 {
+		return nil, ErrMultipleSignatures
+	}
+
 	keyRingReader := strings.NewReader(armoredKeyRing)
 	keyring, err := openpgp.ReadArmoredKeyRing(keyRingReader)
 	if err != nil {

vendor/github.com/go-git/go-git/v5/plumbing/object/commit_scanner.go

@@ -0,0 +1,377 @@
+package object
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/go-git/go-git/v5/plumbing"
+)
+
+// commitScanner holds the working state of the commit decoder driven by the
+// stateFn loop in (*Commit).Decode. Each commitState reads one or more lines
+// from r, updates the in-progress *Commit and the scanner's bookkeeping, and
+// returns the state that should run next (or nil to stop).
+type commitScanner struct {
+	r      *bufio.Reader
+	c      *Commit
+	msgbuf bytes.Buffer
+
+	// pending holds a line that was read but the current state decided to
+	// hand back to the next state, paired with the io.EOF flag that was
+	// returned when the line was originally read.
+	pending    []byte
+	pendingErr error
+
+	// First-occurrence tracking: once the corresponding field has been
+	// decoded, subsequent occurrences are silently dropped (matches
+	// upstream's find_commit_header / first-wins semantics).
+	//
+	// gpgsig is not tracked here: upstream's parse_buffer_signed_by_header
+	// (commit.c:1186) accumulates every occurrence into one signature buffer,
+	// so we do the same on the scanner side to keep verification payloads
+	// byte-aligned. gpgsig-sha256 is recognized and skipped without exposing a
+	// new field in v5.
+	sawTree, sawAuthor, sawCommitter bool
+	sawEncoding, sawMergetag         bool
+
+	// extra is the multi-line ExtraHeader currently being assembled.
+	extra *ExtraHeader
+}
+
+// commitState is one step of the decoder state machine. Each function reads
+// the lines it needs, mutates *Commit via s.c, and returns the next state to
+// run (or nil to terminate the loop).
+type commitState func(*commitScanner) (commitState, error)
+
+// readLine returns the next line from the buffer, transparently consuming any
+// line that was previously pushed back by a state that decided not to handle
+// it.
+func (s *commitScanner) readLine() ([]byte, error) {
+	if s.pending != nil {
+		line, err := s.pending, s.pendingErr
+		s.pending, s.pendingErr = nil, nil
+		return line, err
+	}
+	line, err := s.r.ReadBytes('\n')
+	if err != nil && err != io.EOF {
+		return line, err
+	}
+	return line, err
+}
+
+// pushBack stashes an unconsumed line so the next state's readLine call sees
+// it. Only one line can be pushed back at a time.
+func (s *commitScanner) pushBack(line []byte, err error) {
+	s.pending = line
+	s.pendingErr = err
+}
+
+// scanTree expects the first non-empty header to be `tree HASH`. Anything
+// else (or an empty buffer) is rejected with ErrMalformedCommit, matching
+// upstream's `bogus commit object` check.
+func scanTree(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing tree header", ErrMalformedCommit)
+	}
+
+	key, data := splitHeader(line)
+	if key != "tree" {
+		return nil, fmt.Errorf("%w: tree header must be first", ErrMalformedCommit)
+	}
+	h, herr := parseObjectIDHex(data, ErrMalformedCommit, "tree")
+	if herr != nil {
+		return nil, herr
+	}
+	s.c.TreeHash = h
+	s.sawTree = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanParents, nil
+}
+
+// scanParents consumes contiguous `parent HASH` lines. The first non-parent
+// line ends the parent block and is handed off to scanAuthor; any later
+// `parent` line is silently dropped (matches upstream's parse_commit_buffer
+// exiting its parent loop at the first non-parent line and
+// read_commit_extra_header_lines filtering `parent` out of extras).
+func scanParents(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "parent" {
+		h, herr := parseObjectIDHex(data, ErrMalformedCommit, "parent")
+		if herr != nil {
+			return nil, herr
+		}
+		s.c.ParentHashes = append(s.c.ParentHashes, h)
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanParents, nil
+	}
+	s.pushBack(line, err)
+	return scanAuthor, nil
+}
+
+// scanAuthor accepts an `author` line at its canonical position immediately
+// after the parent block. Any other header here is pushed back for
+// scanCommitter; an out-of-place author is therefore silently dropped.
+// Mirrors upstream's parse_commit_date func.
+func scanAuthor(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "author" {
+		s.c.Author.Decode(data)
+		s.sawAuthor = true
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanCommitter, nil
+	}
+	s.pushBack(line, err)
+	return scanCommitter, nil
+}
+
+// scanCommitter accepts a `committer` line at its canonical position
+// immediately after the author. Any other header is pushed back for
+// scanHeaders. Same upstream rationale as scanAuthor.
+func scanCommitter(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "committer" {
+		s.c.Committer.Decode(data)
+		s.sawCommitter = true
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanHeaders, nil
+	}
+	s.pushBack(line, err)
+	return scanHeaders, nil
+}
+
+// scanHeaders dispatches one header line. Continuation-bearing headers
+// (mergetag, gpgsig, gpgsig-sha256, and unknown extras whose value is
+// continued on subsequent lines) hand off to a dedicated continuation state
+// that handles the `<space>...` lines and then returns here.
+func scanHeaders(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	originalLine := line
+	key, data := splitHeader(line)
+
+	var next commitState = scanHeaders
+	switch key {
+	case "tree", "parent", "author", "committer":
+		// Anything reaching scanHeaders with one of these keys is out of
+		// canonical position: duplicate tree, parent past the contiguous
+		// block, or author/committer not at their expected slot. Drop them
+		// the same way upstream's standard_header_field filter excludes
+		// them from the extras list (read_commit_extra_header_lines,
+		// commit.c:1520-1522).
+	case headerencoding:
+		if !s.sawEncoding {
+			s.c.Encoding = MessageEncoding(data)
+			s.sawEncoding = true
+		}
+	case headermergetag:
+		if s.sawMergetag {
+			next = scanSkipCont
+		} else {
+			s.c.MergeTag += string(data) + "\n"
+			s.sawMergetag = true
+			next = scanMergetagCont
+		}
+	case headerpgp:
+		s.c.PGPSignature += string(data) + "\n"
+		next = scanPgpCont
+	case headerpgp256:
+		next = scanSkipCont
+	default:
+		h, multiline := parseExtraHeader(originalLine)
+		if multiline {
+			s.extra = &h
+			next = scanExtraCont
+		} else {
+			s.c.ExtraHeaders = append(s.c.ExtraHeaders, h)
+		}
+	}
+
+	if err == io.EOF {
+		return nil, nil
+	}
+	return next, nil
+}
+
+// scanMergetagCont accumulates continuation lines for the first mergetag
+// header. Continuations strip exactly one leading space, mirroring upstream's
+// `line + 1` (commit.c:1509). The first non-continuation line is pushed back
+// so scanHeaders can dispatch it.
+func scanMergetagCont(s *commitScanner) (commitState, error) {
+	return continuationCont(s, &s.c.MergeTag, scanMergetagCont)
+}
+
+// scanPgpCont accumulates continuation lines for a signature header.
+// Continuations strip exactly one leading space, mirroring upstream's
+// `line + 1` (commit.c:1509). The first non-continuation line is pushed back
+// so scanHeaders can dispatch it. Repeat occurrences of the same signature
+// header land back here and concatenate, matching upstream's
+// parse_buffer_signed_by_header (commit.c:1186).
+func scanPgpCont(s *commitScanner) (commitState, error) {
+	return continuationCont(s, &s.c.PGPSignature, scanPgpCont)
+}
+
+func continuationCont(s *commitScanner, dst *string, self commitState) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		*dst += string(line[1:])
+		if err == io.EOF {
+			return nil, nil
+		}
+		return self, nil
+	}
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanHeaders, nil
+}
+
+// scanSkipCont discards continuation lines that belong to a header scanHeaders
+// chose to drop.
+func scanSkipCont(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanSkipCont, nil
+	}
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanHeaders, nil
+}
+
+// scanExtraCont accumulates continuation lines for an unknown ExtraHeader
+// whose value spans multiple lines, then finalises the entry once the
+// continuation block ends.
+func scanExtraCont(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		s.extra.Value += string(line[1:])
+		if err == io.EOF {
+			s.finaliseExtra()
+			return nil, nil
+		}
+		return scanExtraCont, nil
+	}
+	s.finaliseExtra()
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanHeaders, nil
+}
+
+func (s *commitScanner) finaliseExtra() {
+	s.extra.Value = strings.TrimRight(s.extra.Value, "\n")
+	s.c.ExtraHeaders = append(s.c.ExtraHeaders, *s.extra)
+	s.extra = nil
+}
+
+// scanMessage drains the remaining bytes into the message buffer.
+func scanMessage(s *commitScanner) (commitState, error) {
+	for {
+		line, err := s.readLine()
+		if err != nil && err != io.EOF {
+			return nil, err
+		}
+		if len(line) > 0 {
+			s.msgbuf.Write(line)
+		}
+		if err == io.EOF {
+			return nil, nil
+		}
+	}
+}
+
+// isBlankLine reports whether line is the canonical header/body separator:
+// a single newline. Mirrors upstream's `*line == '\n'` test in
+// read_commit_extra_header_lines (commit.c:1502).
+func isBlankLine(line []byte) bool {
+	return len(line) == 1 && line[0] == '\n'
+}
+
+// splitHeader returns the header keyword (everything before the first space)
+// and the value (everything after, with the trailing newline stripped). If
+// the header has no value the returned data is nil.
+func splitHeader(line []byte) (string, []byte) {
+	trimmed := bytes.TrimRight(line, "\n")
+	key, value, ok := bytes.Cut(trimmed, []byte{' '})
+	if !ok {
+		return string(trimmed), nil
+	}
+	return string(key), value
+}
+
+func parseObjectIDHex(data []byte, malformedErr error, header string) (plumbing.Hash, error) {
+	id := string(data)
+	if !plumbing.IsHash(id) {
+		return plumbing.ZeroHash, fmt.Errorf("%w: bad %s hash", malformedErr, header)
+	}
+	return plumbing.NewHash(id), nil
+}

vendor/github.com/go-git/go-git/v5/plumbing/object/signature.go

@@ -1,6 +1,13 @@
 package object
 
-import "bytes"
+import (
+	"bytes"
+	"io"
+
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/utils/ioutil"
+	"github.com/go-git/go-git/v5/utils/sync"
+)
 
 const (
 	signatureTypeUnknown signatureType = iota
@@ -100,3 +107,116 @@ func parseSignedBytes(b []byte) (int, signatureType) {
 	}
 	return match, t
 }
+
+// countSignatureBlocks reports how many distinct armored signature blocks
+// start at a line boundary in b. Used by verification paths to reject
+// multi-signature payloads, matching upstream's check in gpg-interface.c
+// where parse_gpg_output bails out the first time it sees a second
+// exclusive status line (a second GOODSIG/BADSIG/etc.).
+func countSignatureBlocks(b []byte) int {
+	n, count := 0, 0
+	for n < len(b) {
+		i := b[n:]
+		if typeForSignature(i) != signatureTypeUnknown {
+			count++
+		}
+		if eol := bytes.IndexByte(i, '\n'); eol >= 0 {
+			n += eol + 1
+			continue
+		}
+		break
+	}
+	return count
+}
+
+// isSignatureHeader reports whether line is a canonical "gpgsig "/
+// "gpgsig-sha256 " header line. Other "gpgsig"-prefixed extra headers
+// are intentionally not matched.
+func isSignatureHeader(line []byte) bool {
+	return bytes.HasPrefix(line, []byte(headerpgp+" ")) ||
+		bytes.HasPrefix(line, []byte(headerpgp256+" "))
+}
+
+// stripObjectSignatures streams src into dst, producing the byte sequence
+// over which a PGP/GPG signature is computed:
+//
+//   - Canonical "gpgsig" and "gpgsig-sha256" headers (and their
+//     continuation lines) are dropped, mirroring upstream's
+//     remove_signature in commit.c.
+//   - For tag objects, the inline trailing PGP signature is additionally
+//     truncated, mirroring upstream's parse_signature in gpg-interface.c
+//     used by gpg_verify_tag.
+//
+// The returned object's type is set to objType. Used by both
+// Commit.EncodeWithoutSignature and Tag.EncodeWithoutSignature to
+// reproduce the exact bytes the signature was computed over.
+func stripObjectSignatures(dst, src plumbing.EncodedObject, objType plumbing.ObjectType) (err error) {
+	dst.SetType(objType)
+
+	r, err := src.Reader()
+	if err != nil {
+		return err
+	}
+	defer ioutil.CheckClose(r, &err)
+
+	var input io.Reader = r
+	if objType == plumbing.TagObject {
+		raw, err := io.ReadAll(r)
+		if err != nil {
+			return err
+		}
+		if sm, _ := parseSignedBytes(raw); sm >= 0 {
+			raw = raw[:sm]
+		}
+		input = bytes.NewReader(raw)
+	}
+
+	w, err := dst.Writer()
+	if err != nil {
+		return err
+	}
+	defer ioutil.CheckClose(w, &err)
+
+	return stripHeaderSignatures(w, input)
+}
+
+// stripHeaderSignatures copies r to w, dropping canonical signature header
+// lines (gpgsig and gpgsig-sha256) and their continuation lines. Lines
+// past the blank line that closes the header block are copied verbatim.
+func stripHeaderSignatures(w io.Writer, r io.Reader) error {
+	br := sync.GetBufioReader(r)
+	defer sync.PutBufioReader(br)
+
+	var inBody, skipping bool
+	for {
+		line, rerr := br.ReadBytes('\n')
+		if rerr != nil && rerr != io.EOF {
+			return rerr
+		}
+
+		write := true
+		if !inBody {
+			switch {
+			case skipping && len(line) > 0 && line[0] == ' ':
+				write = false
+			case isSignatureHeader(line):
+				skipping = true
+				write = false
+			case len(line) == 1 && line[0] == '\n':
+				skipping = false
+				inBody = true
+			default:
+				skipping = false
+			}
+		}
+
+		if write && len(line) > 0 {
+			if _, werr := w.Write(line); werr != nil {
+				return werr
+			}
+		}
+		if rerr == io.EOF {
+			return nil
+		}
+	}
+}

vendor/github.com/go-git/go-git/v5/plumbing/object/tag.go

@@ -1,9 +1,8 @@
 package object
 
 import (
-	"bytes"
+	"errors"
 	"fmt"
-	"io"
 	"strings"
 
 	"github.com/ProtonMail/go-crypto/openpgp"
@@ -13,6 +12,10 @@ import (
 	"github.com/go-git/go-git/v5/utils/sync"
 )
 
+// ErrMalformedTag is returned when a tag object cannot be decoded because
+// its required headers (object, type, tag) are missing or out of order.
+var ErrMalformedTag = errors.New("malformed tag")
+
 // Tag represents an annotated tag object. It points to a single git object of
 // any type, but tags typically are applied to commit or blob objects. It
 // provides a reference that associates the target with a tag name. It also
@@ -39,6 +42,9 @@ type Tag struct {
 	Target plumbing.Hash
 
 	s storer.EncodedObjectStorer
+	// src holds the encoded object this Tag was decoded from, used by
+	// EncodeWithoutSignature to recover the canonical signed bytes.
+	src plumbing.EncodedObject
 }
 
 // GetTag gets a tag from an object storer and decodes it.
@@ -77,13 +83,20 @@ func (t *Tag) Type() plumbing.ObjectType {
 	return plumbing.TagObject
 }
 
+func (t *Tag) reset() {
+	storer := t.s
+	*t = Tag{s: storer}
+}
+
 // Decode transforms a plumbing.EncodedObject into a Tag struct.
 func (t *Tag) Decode(o plumbing.EncodedObject) (err error) {
 	if o.Type() != plumbing.TagObject {
 		return ErrUnsupportedObject
 	}
 
+	t.reset()
 	t.Hash = o.Hash()
+	t.src = o
 
 	reader, err := o.Reader()
 	if err != nil {
@@ -94,42 +107,15 @@ func (t *Tag) Decode(o plumbing.EncodedObject) (err error) {
 	r := sync.GetBufioReader(reader)
 	defer sync.PutBufioReader(r)
 
-	for {
+	scanner := &tagScanner{r: r, t: t}
-		var line []byte
+	for state := scanTagObject; state != nil; {
-		line, err = r.ReadBytes('\n')
+		state, err = state(scanner)
-		if err != nil && err != io.EOF {
-			return err
-		}
-
-		line = bytes.TrimSpace(line)
-		if len(line) == 0 {
-			break // Start of message
-		}
-
-		split := bytes.SplitN(line, []byte{' '}, 2)
-		switch string(split[0]) {
-		case "object":
-			t.Target = plumbing.NewHash(string(split[1]))
-		case "type":
-			t.TargetType, err = plumbing.ParseObjectType(string(split[1]))
 		if err != nil {
 			return err
 		}
-		case "tag":
-			t.Name = string(split[1])
-		case "tagger":
-			t.Tagger.Decode(split[1])
 	}
 
-		if err == io.EOF {
+	data := scanner.msgbuf.Bytes()
-			return nil
-		}
-	}
-
-	data, err := io.ReadAll(r)
-	if err != nil {
-		return err
-	}
 	if sm, _ := parseSignedBytes(data); sm >= 0 {
 		t.PGPSignature = string(data[sm:])
 		data = data[:sm]
@@ -144,11 +130,54 @@ func (t *Tag) Encode(o plumbing.EncodedObject) error {
 	return t.encode(o, true)
 }
 
-// EncodeWithoutSignature export a Tag into a plumbing.EncodedObject without the signature (correspond to the payload of the PGP signature).
+// EncodeWithoutSignature exports a Tag into a plumbing.EncodedObject without
+// any signature data, producing the payload that PGP/GPG signatures are
+// computed over.
+//
+// Behaviour mirrors Commit.EncodeWithoutSignature:
+//
+//   - For Tags populated by Decode whose exported fields still match the
+//     source object, the payload is streamed from the raw source bytes with
+//     the inline trailing signature truncated and gpgsig/gpgsig-sha256
+//     headers (and their continuation lines) stripped verbatim. This
+//     preserves the exact bytes the signature was computed over, regardless
+//     of any normalization performed by Decode.
+//
+//   - For Tags constructed in memory, or for decoded Tags whose exported
+//     fields have been mutated, the payload is derived from the current
+//     struct fields. Mutation is detected by re-decoding the source object
+//     and comparing exported fields; if any differ, the in-memory
+//     representation prevails.
 func (t *Tag) EncodeWithoutSignature(o plumbing.EncodedObject) error {
+	if t.matchesSource() {
+		return stripObjectSignatures(o, t.src, plumbing.TagObject)
+	}
 	return t.encode(o, false)
 }
 
+// matchesSource reports whether t.src is set and re-decoding it produces a
+// Tag whose payload-affecting exported fields are identical to those of t.
+//
+// PGPSignature is intentionally excluded from the comparison: neither path
+// emits it as part of the verification payload, so mutating it must not
+// trigger a switch to struct-encode (which would change the byte layout the
+// caller is trying to verify against).
+func (t *Tag) matchesSource() bool {
+	if t.src == nil {
+		return false
+	}
+	fresh := &Tag{}
+	if err := fresh.Decode(t.src); err != nil {
+		return false
+	}
+	return t.Hash == fresh.Hash &&
+		t.Name == fresh.Name &&
+		signatureEqual(t.Tagger, fresh.Tagger) &&
+		t.Message == fresh.Message &&
+		t.TargetType == fresh.TargetType &&
+		t.Target == fresh.Target
+}
+
 func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	o.SetType(plumbing.TagObject)
 	w, err := o.Writer()
@@ -158,16 +187,26 @@ func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	defer ioutil.CheckClose(w, &err)
 
 	if _, err = fmt.Fprintf(w,
-		"object %s\ntype %s\ntag %s\ntagger ",
+		"object %s\ntype %s\ntag %s\n",
 		t.Target.String(), t.TargetType.Bytes(), t.Name); err != nil {
 		return err
 	}
 
+	if !isZeroSignature(t.Tagger) {
+		if _, err = fmt.Fprint(w, "tagger "); err != nil {
+			return err
+		}
+
 		if err = t.Tagger.Encode(w); err != nil {
 			return err
 		}
 
-	if _, err = fmt.Fprint(w, "\n\n"); err != nil {
+		if _, err = fmt.Fprint(w, "\n"); err != nil {
+			return err
+		}
+	}
+
+	if _, err = fmt.Fprint(w, "\n"); err != nil {
 		return err
 	}
 
@@ -175,11 +214,12 @@ func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 		return err
 	}
 
-	// Note that this is highly sensitive to what it sent along in the message.
+	// Note that this is highly sensitive to what is sent along in the
-	// Message *always* needs to end with a newline, or else the message and the
+	// message. Message *always* needs to end with a newline, or else the
-	// signature will be concatenated into a corrupt object. Since this is a
+	// message and the trailing signature will be concatenated into a
-	// lower-level method, we assume you know what you are doing and have already
+	// corrupt object. Since this is a lower-level method, we assume you
-	// done the needful on the message in the caller.
+	// know what you are doing and have already done the needful on the
+	// message in the caller.
 	if includeSig {
 		if _, err = fmt.Fprint(w, t.PGPSignature); err != nil {
 			return err
@@ -189,6 +229,10 @@ func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	return err
 }
 
+func isZeroSignature(s Signature) bool {
+	return s.Name == "" && s.Email == "" && s.When.IsZero()
+}
+
 // Commit returns the commit pointed to by the tag. If the tag points to a
 // different type of object ErrUnsupportedObject will be returned.
 func (t *Tag) Commit() (*Commit, error) {
@@ -256,7 +300,8 @@ func (t *Tag) String() string {
 }
 
 // Verify performs PGP verification of the tag with a provided armored
-// keyring and returns openpgp.Entity associated with verifying key on success.
+// keyring and returns openpgp.Entity associated with verifying key on
+// success.
 func (t *Tag) Verify(armoredKeyRing string) (*openpgp.Entity, error) {
 	keyRingReader := strings.NewReader(armoredKeyRing)
 	keyring, err := openpgp.ReadArmoredKeyRing(keyRingReader)

vendor/github.com/go-git/go-git/v5/plumbing/object/tag_scanner.go

@@ -0,0 +1,237 @@
+package object
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+
+	"github.com/go-git/go-git/v5/plumbing"
+)
+
+// tagScanner holds the working state of the tag decoder driven by the
+// stateFn loop in (*Tag).Decode. Each tagState reads one or more lines
+// from r, updates the in-progress *Tag and the scanner's bookkeeping,
+// and returns the state that should run next (or nil to stop).
+type tagScanner struct {
+	r      *bufio.Reader
+	t      *Tag
+	msgbuf bytes.Buffer
+
+	// pending holds a line that was read but the current state decided to
+	// hand back to the next state, paired with the io.EOF flag returned
+	// when the line was originally read.
+	pending    []byte
+	pendingErr error
+
+	// First-occurrence tracking: once the corresponding canonical
+	// header has been decoded at its expected position, subsequent
+	// occurrences (or out-of-position lines) are silently dropped,
+	// matching the strict layout enforced by upstream's
+	// parse_tag_buffer (tag.c:130).
+	//
+	// gpgsig-sha256 is recognized and skipped without exposing a new field
+	// in v5.
+	sawObject, sawType, sawName, sawTagger bool
+}
+
+// tagState is one step of the decoder state machine. Each function reads
+// the lines it needs, mutates *Tag via s.t, and returns the next state
+// to run (or nil to terminate the loop).
+type tagState func(*tagScanner) (tagState, error)
+
+// readLine returns the next line from the buffer, transparently
+// consuming any line that was previously pushed back by a state that
+// decided not to handle it.
+func (s *tagScanner) readLine() ([]byte, error) {
+	if s.pending != nil {
+		line, err := s.pending, s.pendingErr
+		s.pending, s.pendingErr = nil, nil
+		return line, err
+	}
+	return s.r.ReadBytes('\n')
+}
+
+// pushBack stashes an unconsumed line so the next state's readLine call
+// sees it. Only one line can be pushed back at a time.
+func (s *tagScanner) pushBack(line []byte, err error) {
+	s.pending = line
+	s.pendingErr = err
+}
+
+// scanTagObject requires the first line to be `object HASH`, mirroring
+// upstream's strict parse_tag_buffer (tag.c:151-156). Anything else
+// returns ErrMalformedTag.
+func scanTagObject(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing object header", ErrMalformedTag)
+	}
+
+	key, data := splitHeader(line)
+	if key != "object" {
+		return nil, fmt.Errorf("%w: object header must be first", ErrMalformedTag)
+	}
+	h, herr := parseObjectIDHex(data, ErrMalformedTag, "object")
+	if herr != nil {
+		return nil, herr
+	}
+	s.t.Target = h
+	s.sawObject = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanTagType, nil
+}
+
+// scanTagType requires a `type` line immediately after the object header,
+// mirroring upstream's parse_tag_buffer (tag.c:158-166).
+func scanTagType(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing type header", ErrMalformedTag)
+	}
+
+	key, data := splitHeader(line)
+	if key != "type" {
+		return nil, fmt.Errorf("%w: type header must follow object", ErrMalformedTag)
+	}
+	ot, perr := plumbing.ParseObjectType(string(data))
+	if perr != nil {
+		return nil, perr
+	}
+	s.t.TargetType = ot
+	s.sawType = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanTagName, nil
+}
+
+// scanTagName requires a `tag` line immediately after the type header,
+// mirroring upstream's parse_tag_buffer (tag.c:186-194).
+func scanTagName(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing tag header", ErrMalformedTag)
+	}
+
+	key, data := splitHeader(line)
+	if key != "tag" {
+		return nil, fmt.Errorf("%w: tag header must follow type", ErrMalformedTag)
+	}
+	s.t.Name = string(data)
+	s.sawName = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanTagTagger, nil
+}
+
+// scanTagTagger accepts a `tagger` line at its canonical position. Any
+// other header is pushed back for scanTagHeaders.
+func scanTagTagger(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanTagMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "tagger" {
+		s.t.Tagger.Decode(data)
+		s.sawTagger = true
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanTagHeaders, nil
+	}
+	s.pushBack(line, err)
+	return scanTagHeaders, nil
+}
+
+// scanTagHeaders dispatches one header line. gpgsig-sha256 hands off to
+// scanTagSkipCont so the continuation block can be consumed; out-of-position
+// canonical fields and unknown headers are silently dropped.
+func scanTagHeaders(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanTagMessage, nil
+	}
+
+	key, _ := splitHeader(line)
+	next := scanTagHeaders
+	switch key {
+	case "object", "type", "tag", "tagger":
+		// Out-of-canonical-position duplicates are dropped, mirroring the
+		// strict ordering of upstream's parse_tag_buffer.
+	case headerpgp256:
+		next = scanTagSkipCont
+	default:
+		// Unknown header: silently dropped (the Tag struct does not
+		// expose ExtraHeaders).
+	}
+
+	if err == io.EOF {
+		return nil, nil
+	}
+	return next, nil
+}
+
+// scanTagSkipCont discards continuation lines for a header scanTagHeaders chose
+// to drop. The first non-continuation line is pushed back so scanTagHeaders can
+// dispatch it.
+func scanTagSkipCont(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanTagSkipCont, nil
+	}
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanTagHeaders, nil
+}
+
+// scanTagMessage drains the remaining bytes into the message buffer.
+// (*Tag).Decode then runs parseSignedBytes over those bytes to peel off
+// the optional inline trailing PGP signature.
+func scanTagMessage(s *tagScanner) (tagState, error) {
+	for {
+		line, err := s.readLine()
+		if err != nil && err != io.EOF {
+			return nil, err
+		}
+		if len(line) > 0 {
+			s.msgbuf.Write(line)
+		}
+		if err == io.EOF {
+			return nil, nil
+		}
+	}
+}

vendor/github.com/go-git/go-git/v5/plumbing/object/tree.go

@@ -29,6 +29,7 @@ var (
 	ErrDirectoryNotFound = errors.New("directory not found")
 	ErrEntryNotFound     = errors.New("entry not found")
 	ErrEntriesNotSorted  = errors.New("entries in tree are not sorted")
+	ErrMalformedTree     = errors.New("malformed tree")
 )
 
 // Tree is basically like a directory - it references a bunch of other trees
@@ -38,8 +39,8 @@ type Tree struct {
 	Hash    plumbing.Hash
 
 	s             storer.EncodedObjectStorer
-	m map[string]*TreeEntry
 	t             map[string]*Tree // tree path cache
+	entriesSorted bool
 }
 
 // GetTree gets a tree from an object storer and decodes it.
@@ -182,17 +183,44 @@ func (t *Tree) dir(baseName string) (*Tree, error) {
 }
 
 func (t *Tree) entry(baseName string) (*TreeEntry, error) {
-	if t.m == nil {
+	if t.entriesSorted {
-		t.buildMap()
+		if entry := t.searchEntry(baseName); entry != nil {
+			return entry, nil
 		}
-
-	entry, ok := t.m[baseName]
-	if !ok {
 		return nil, ErrEntryNotFound
 	}
 
+	pastName := baseName + "/"
+	for i := range t.Entries {
+		entry := &t.Entries[i]
+		if entry.Name == baseName {
 			return entry, nil
 		}
+		if treeEntrySortName(entry) > pastName {
+			break
+		}
+	}
+
+	return nil, ErrEntryNotFound
+}
+
+func (t *Tree) searchEntry(baseName string) *TreeEntry {
+	if i := t.searchEntryIndex(baseName); i < len(t.Entries) && t.Entries[i].Name == baseName {
+		return &t.Entries[i]
+	}
+
+	if i := t.searchEntryIndex(baseName + "/"); i < len(t.Entries) && t.Entries[i].Name == baseName {
+		return &t.Entries[i]
+	}
+
+	return nil
+}
+
+func (t *Tree) searchEntryIndex(name string) int {
+	return sort.Search(len(t.Entries), func(i int) bool {
+		return treeEntrySortName(&t.Entries[i]) >= name
+	})
+}
 
 // Files returns a FileIter allowing to iterate over the Tree
 func (t *Tree) Files() *FileIter {
@@ -212,20 +240,25 @@ func (t *Tree) Type() plumbing.ObjectType {
 	return plumbing.TreeObject
 }
 
+func (t *Tree) reset() {
+	storer := t.s
+	*t = Tree{s: storer}
+}
+
 // Decode transform an plumbing.EncodedObject into a Tree struct
 func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 	if o.Type() != plumbing.TreeObject {
 		return ErrUnsupportedObject
 	}
 
+	t.reset()
 	t.Hash = o.Hash()
+	// assume tree is sorted as a valid tree should always be sorted.
+	t.entriesSorted = true
 	if o.Size() == 0 {
 		return nil
 	}
 
-	t.Entries = nil
-	t.m = nil
-
 	reader, err := o.Reader()
 	if err != nil {
 		return err
@@ -235,10 +268,14 @@ func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 	r := sync.GetBufioReader(reader)
 	defer sync.PutBufioReader(r)
 
+	var prevSortName string
 	for {
 		str, err := r.ReadString(' ')
 		if err != nil {
 			if err == io.EOF {
+				if len(str) != 0 {
+					return fmt.Errorf("%w: missing mode terminator", ErrMalformedTree)
+				}
 				break
 			}
 
@@ -248,25 +285,41 @@ func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 
 		mode, err := filemode.New(str)
 		if err != nil {
-			return err
+			return fmt.Errorf("%w: malformed mode", ErrMalformedTree)
 		}
+		mode = canonicalTreeMode(mode)
 
 		name, err := r.ReadString(0)
-		if err != nil && err != io.EOF {
+		if err != nil {
+			if err == io.EOF {
+				return fmt.Errorf("%w: missing filename terminator", ErrMalformedTree)
+			}
 			return err
 		}
+		if len(name) == 1 {
+			return fmt.Errorf("%w: empty filename", ErrMalformedTree)
+		}
 
 		var hash plumbing.Hash
 		if _, err = io.ReadFull(r, hash[:]); err != nil {
+			if errors.Is(err, io.EOF) || errors.Is(err, io.ErrUnexpectedEOF) {
+				return fmt.Errorf("%w: truncated object id", ErrMalformedTree)
+			}
 			return err
 		}
 
 		baseName := name[:len(name)-1]
-		t.Entries = append(t.Entries, TreeEntry{
+		entry := TreeEntry{
 			Hash: hash,
 			Mode: mode,
 			Name: baseName,
-		})
+		}
+		sortName := treeEntrySortName(&entry)
+		if len(t.Entries) != 0 && prevSortName > sortName {
+			t.entriesSorted = false
+		}
+		prevSortName = sortName
+		t.Entries = append(t.Entries, entry)
 	}
 
 	return nil
@@ -279,21 +332,37 @@ func (s TreeEntrySorter) Len() int {
 }
 
 func (s TreeEntrySorter) Less(i, j int) bool {
-	name1 := s[i].Name
+	return treeEntrySortName(&s[i]) < treeEntrySortName(&s[j])
-	name2 := s[j].Name
-	if s[i].Mode == filemode.Dir {
-		name1 += "/"
-	}
-	if s[j].Mode == filemode.Dir {
-		name2 += "/"
-	}
-	return name1 < name2
 }
 
 func (s TreeEntrySorter) Swap(i, j int) {
 	s[i], s[j] = s[j], s[i]
 }
 
+// Git compares tree entries as if directory names had a trailing slash.
+func treeEntrySortName(e *TreeEntry) string {
+	if e.Mode == filemode.Dir {
+		return e.Name + "/"
+	}
+	return e.Name
+}
+
+func canonicalTreeMode(mode filemode.FileMode) filemode.FileMode {
+	switch mode & 0o170000 {
+	case 0o040000:
+		return filemode.Dir
+	case 0o100000:
+		if mode&0o111 != 0 {
+			return filemode.Executable
+		}
+		return filemode.Regular
+	case 0o120000:
+		return filemode.Symlink
+	default:
+		return filemode.Submodule
+	}
+}
+
 // Encode transforms a Tree into a plumbing.EncodedObject.
 // The tree entries must be sorted by name.
 func (t *Tree) Encode(o plumbing.EncodedObject) (err error) {
@@ -329,13 +398,6 @@ func (t *Tree) Encode(o plumbing.EncodedObject) (err error) {
 	return err
 }
 
-func (t *Tree) buildMap() {
-	t.m = make(map[string]*TreeEntry)
-	for i := 0; i < len(t.Entries); i++ {
-		t.m[t.Entries[i].Name] = &t.Entries[i]
-	}
-}
-
 // Diff returns a list of changes between this tree and the provided one
 func (t *Tree) Diff(to *Tree) (Changes, error) {
 	return t.DiffContext(context.Background(), to)

vendor/github.com/go-git/go-git/v5/plumbing/transport/http/common.go

@@ -7,7 +7,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"net"
 	"net/http"
 	"net/url"
 	"reflect"
@@ -24,6 +23,33 @@ import (
 	"github.com/go-git/go-git/v5/utils/ioutil"
 )
 
+type contextKey int
+
+const initialRequestKey contextKey = iota
+
+// RedirectPolicy controls how the HTTP transport follows redirects.
+//
+// The values mirror Git's http.followRedirects config:
+// "true" follows redirects for all requests, "false" treats redirects as
+// errors, and "initial" follows redirects only for the initial
+// /info/refs discovery request. The zero value defaults to "initial".
+type RedirectPolicy string
+
+const (
+	FollowInitialRedirects RedirectPolicy = "initial"
+	FollowRedirects        RedirectPolicy = "true"
+	NoFollowRedirects      RedirectPolicy = "false"
+)
+
+func withInitialRequest(ctx context.Context) context.Context {
+	return context.WithValue(ctx, initialRequestKey, true)
+}
+
+func isInitialRequest(req *http.Request) bool {
+	v, _ := req.Context().Value(initialRequestKey).(bool)
+	return v
+}
+
 // it requires a bytes.Buffer, because we need to know the length
 func applyHeadersToRequest(req *http.Request, content *bytes.Buffer, host string, requestType string) {
 	req.Header.Add("User-Agent", capability.DefaultAgent())
@@ -54,12 +80,15 @@ func advertisedReferences(ctx context.Context, s *session, serviceName string) (
 
 	s.ApplyAuthToRequest(req)
 	applyHeadersToRequest(req, nil, s.endpoint.Host, serviceName)
-	res, err := s.client.Do(req.WithContext(ctx))
+	res, err := s.client.Do(req.WithContext(withInitialRequest(ctx)))
 	if err != nil {
 		return nil, err
 	}
 
-	s.ModifyEndpointIfRedirect(res)
+	if err := s.ModifyEndpointIfRedirect(res); err != nil {
+		_ = res.Body.Close()
+		return nil, err
+	}
 	defer ioutil.CheckClose(res.Body, &err)
 
 	if err = NewErr(res); err != nil {
@@ -96,6 +125,7 @@ type client struct {
 	client     *http.Client
 	transports *lru.Cache
 	mutex      sync.RWMutex
+	follow     RedirectPolicy
 }
 
 // ClientOptions holds user configurable options for the client.
@@ -106,6 +136,11 @@ type ClientOptions struct {
 	// size, will result in the least recently used transport getting deleted
 	// before the provided transport is added to the cache.
 	CacheMaxEntries int
+
+	// RedirectPolicy controls redirect handling. Supported values are
+	// "true", "false", and "initial". The zero value defaults to
+	// "initial", matching Git's http.followRedirects default.
+	RedirectPolicy RedirectPolicy
 }
 
 var (
@@ -150,12 +185,16 @@ func NewClientWithOptions(c *http.Client, opts *ClientOptions) transport.Transpo
 	}
 	cl := &client{
 		client: c,
+		follow: FollowInitialRedirects,
 	}
 
 	if opts != nil {
 		if opts.CacheMaxEntries > 0 {
 			cl.transports = lru.New(opts.CacheMaxEntries)
 		}
+		if opts.RedirectPolicy != "" {
+			cl.follow = opts.RedirectPolicy
+		}
 	}
 	return cl
 }
@@ -289,14 +328,9 @@ func newSession(c *client, ep *transport.Endpoint, auth transport.AuthMethod) (*
 			}
 		}
 
-		httpClient = &http.Client{
+		httpClient = c.cloneHTTPClient(transport)
-			Transport:     transport,
-			CheckRedirect: c.client.CheckRedirect,
-			Jar:           c.client.Jar,
-			Timeout:       c.client.Timeout,
-		}
 	} else {
-		httpClient = c.client
+		httpClient = c.cloneHTTPClient(c.client.Transport)
 	}
 
 	s := &session{
@@ -324,30 +358,122 @@ func (s *session) ApplyAuthToRequest(req *http.Request) {
 	s.auth.SetAuth(req)
 }
 
-func (s *session) ModifyEndpointIfRedirect(res *http.Response) {
+func (s *session) ModifyEndpointIfRedirect(res *http.Response) error {
 	if res.Request == nil {
-		return
+		return nil
+	}
+	if s.endpoint == nil {
+		return fmt.Errorf("http redirect: nil endpoint")
 	}
 
 	r := res.Request
 	if !strings.HasSuffix(r.URL.Path, infoRefsPath) {
-		return
+		return fmt.Errorf("http redirect: target %q does not end with %s", r.URL.Path, infoRefsPath)
+	}
+	if r.URL.Scheme != "http" && r.URL.Scheme != "https" {
+		return fmt.Errorf("http redirect: unsupported scheme %q", r.URL.Scheme)
+	}
+	if r.URL.Scheme != s.endpoint.Protocol &&
+		!(s.endpoint.Protocol == "http" && r.URL.Scheme == "https") {
+		return fmt.Errorf("http redirect: changes scheme from %q to %q", s.endpoint.Protocol, r.URL.Scheme)
 	}
 
-	h, p, err := net.SplitHostPort(r.URL.Host)
+	host := endpointHost(r.URL.Hostname())
+	port, err := endpointPort(r.URL.Port())
 	if err != nil {
-		h = r.URL.Host
+		return err
 	}
-	if p != "" {
+
-		port, err := strconv.Atoi(p)
+	if host != s.endpoint.Host || effectivePort(r.URL.Scheme, port) != effectivePort(s.endpoint.Protocol, s.endpoint.Port) {
-		if err == nil {
+		s.endpoint.User = ""
+		s.endpoint.Password = ""
+		s.auth = nil
+	}
+
+	s.endpoint.Host = host
 	s.endpoint.Port = port
-		}
-	}
-	s.endpoint.Host = h
 
 	s.endpoint.Protocol = r.URL.Scheme
 	s.endpoint.Path = r.URL.Path[:len(r.URL.Path)-len(infoRefsPath)]
+	return nil
+}
+
+func endpointHost(host string) string {
+	if strings.Contains(host, ":") {
+		return "[" + host + "]"
+	}
+
+	return host
+}
+
+func endpointPort(port string) (int, error) {
+	if port == "" {
+		return 0, nil
+	}
+
+	parsed, err := strconv.Atoi(port)
+	if err != nil {
+		return 0, fmt.Errorf("http redirect: invalid port %q", port)
+	}
+
+	return parsed, nil
+}
+
+func effectivePort(scheme string, port int) int {
+	if port != 0 {
+		return port
+	}
+
+	switch strings.ToLower(scheme) {
+	case "http":
+		return 80
+	case "https":
+		return 443
+	default:
+		return 0
+	}
+}
+
+func (c *client) cloneHTTPClient(transport http.RoundTripper) *http.Client {
+	return &http.Client{
+		Transport:     transport,
+		CheckRedirect: wrapCheckRedirect(c.follow, c.client.CheckRedirect),
+		Jar:           c.client.Jar,
+		Timeout:       c.client.Timeout,
+	}
+}
+
+func wrapCheckRedirect(policy RedirectPolicy, next func(*http.Request, []*http.Request) error) func(*http.Request, []*http.Request) error {
+	return func(req *http.Request, via []*http.Request) error {
+		if err := checkRedirect(req, via, policy); err != nil {
+			return err
+		}
+		if next != nil {
+			return next(req, via)
+		}
+		return nil
+	}
+}
+
+func checkRedirect(req *http.Request, via []*http.Request, policy RedirectPolicy) error {
+	switch policy {
+	case FollowRedirects:
+	case NoFollowRedirects:
+		return fmt.Errorf("http redirect: redirects disabled to %s", req.URL)
+	case "", FollowInitialRedirects:
+		if !isInitialRequest(req) {
+			return fmt.Errorf("http redirect: redirect on non-initial request to %s", req.URL)
+		}
+	default:
+		return fmt.Errorf("http redirect: invalid redirect policy %q", policy)
+	}
+	if req.URL.Scheme != "http" && req.URL.Scheme != "https" {
+		return fmt.Errorf("http redirect: unsupported scheme %q", req.URL.Scheme)
+	}
+	if len(via) >= 10 {
+		return fmt.Errorf("http redirect: too many redirects")
+	}
+	return nil
 }
 
 func (*session) Close() error {

vendor/github.com/go-git/go-git/v5/repository.go

@@ -208,6 +208,12 @@ func Open(s storage.Storer, worktree billy.Filesystem) (*Repository, error) {
 		return nil, ErrRepositoryNotExists
 	}
 
+	cfg, err := s.Config()
+	if err != nil {
+		return nil, err
+	}
+
+	err = verifyExtensions(s, cfg)
 	if err != nil {
 		return nil, err
 	}

vendor/github.com/go-git/go-git/v5/repository_extensions.go

@@ -0,0 +1,121 @@
+package git
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/go-git/go-git/v5/config"
+	cfgformat "github.com/go-git/go-git/v5/plumbing/format/config"
+	"github.com/go-git/go-git/v5/storage"
+)
+
+var (
+	// ErrUnsupportedExtensionRepositoryFormatVersion represents when an
+	// extension being used is not compatible with the repository's
+	// core.repositoryFormatVersion.
+	ErrUnsupportedExtensionRepositoryFormatVersion = errors.New("core.repositoryformatversion does not support extension")
+
+	// ErrUnsupportedRepositoryFormatVersion represents when an repository
+	// is using a format version that is not supported.
+	ErrUnsupportedRepositoryFormatVersion = errors.New("core.repositoryformatversion not supported")
+
+	// ErrUnknownExtension represents when a repository has an extension
+	// which is unknown or unsupported by go-git.
+	ErrUnknownExtension = errors.New("unknown extension")
+
+	// builtinExtensions defines the Git extensions that are supported by
+	// the core go-git implementation.
+	//
+	// Some extensions are storage-specific, those are defined by the Storers
+	// themselves by implementing the ExtensionChecker interface.
+	builtinExtensions = map[string]struct{}{
+		// noop does not change git’s behavior at all.
+		// It is useful only for testing format-1 compatibility.
+		//
+		// This extension is respected regardless of the
+		// core.repositoryFormatVersion setting.
+		"noop": {},
+
+		// noop-v1 does not change git’s behavior at all.
+		// It is useful only for testing format-1 compatibility.
+		"noop-v1": {},
+	}
+
+	// Some Git extensions were supported upstream before the introduction
+	// of repositoryformatversion. These are the only extensions that can be
+	// enabled while core.repositoryformatversion is unset or set to 0.
+	extensionsValidForV0 = map[string]struct{}{
+		"noop":            {},
+		"partialClone":    {},
+		"preciousObjects": {},
+		"worktreeConfig":  {},
+	}
+)
+
+type extension struct {
+	name  string
+	value string
+}
+
+func extensions(cfg *config.Config) []extension {
+	if cfg == nil || cfg.Raw == nil {
+		return nil
+	}
+
+	if !cfg.Raw.HasSection("extensions") {
+		return nil
+	}
+
+	section := cfg.Raw.Section("extensions")
+	out := make([]extension, 0, len(section.Options))
+	for _, opt := range section.Options {
+		out = append(out, extension{name: strings.ToLower(opt.Key), value: strings.ToLower(opt.Value)})
+	}
+
+	return out
+}
+
+func verifyExtensions(st storage.Storer, cfg *config.Config) error {
+	needed := extensions(cfg)
+
+	switch cfg.Core.RepositoryFormatVersion {
+	case "", cfgformat.Version_0, cfgformat.Version_1:
+	default:
+		return fmt.Errorf("%w: %q",
+			ErrUnsupportedRepositoryFormatVersion,
+			cfg.Core.RepositoryFormatVersion)
+	}
+
+	if len(needed) > 0 {
+		if cfg.Core.RepositoryFormatVersion == cfgformat.Version_0 ||
+			cfg.Core.RepositoryFormatVersion == "" {
+			var unsupported []string
+			for _, ext := range needed {
+				if _, ok := extensionsValidForV0[ext.name]; !ok {
+					unsupported = append(unsupported, ext.name)
+				}
+			}
+			if len(unsupported) > 0 {
+				return fmt.Errorf("%w: %s",
+					ErrUnsupportedExtensionRepositoryFormatVersion,
+					strings.Join(unsupported, ", "))
+			}
+		}
+
+		var missing []string
+		for _, ext := range needed {
+			if _, ok := builtinExtensions[ext.name]; ok {
+				continue
+			}
+
+			missing = append(missing, ext.name)
+		}
+
+		if len(missing) > 0 {
+			return fmt.Errorf("%w: %s", ErrUnknownExtension, strings.Join(missing, ", "))
+		}
+	}
+
+	return nil
+}

vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/writers.go

@@ -3,6 +3,7 @@ package dotgit
 import (
 	"fmt"
 	"io"
+	"os"
 	"sync/atomic"
 
 	"github.com/go-git/go-git/v5/plumbing"
@@ -131,20 +132,62 @@ func (w *PackWriter) clean() error {
 
 func (w *PackWriter) save() error {
 	base := w.fs.Join(objectsPath, packPath, fmt.Sprintf("pack-%s", w.checksum))
-	idx, err := w.fs.Create(fmt.Sprintf("%s.idx", base))
+
+	// Pack files are content addressable. Each file is checked
+	// individually — if it already exists on disk, skip creating it.
+	idxPath := fmt.Sprintf("%s.idx", base)
+	exists, err := fileExists(w.fs, idxPath)
+	if err != nil {
+		return err
+	}
+	if !exists {
+		idx, err := w.fs.Create(idxPath)
 		if err != nil {
 			return err
 		}
 
 		if err := w.encodeIdx(idx); err != nil {
+			_ = idx.Close()
 			return err
 		}
 
 		if err := idx.Close(); err != nil {
 			return err
 		}
+		fixPermissions(w.fs, idxPath)
+	}
 
-	return w.fs.Rename(w.fw.Name(), fmt.Sprintf("%s.pack", base))
+	packPath := fmt.Sprintf("%s.pack", base)
+	exists, err = fileExists(w.fs, packPath)
+	if err != nil {
+		return err
+	}
+	if !exists {
+		if err := w.fs.Rename(w.fw.Name(), packPath); err != nil {
+			return err
+		}
+		fixPermissions(w.fs, packPath)
+	} else {
+		// Pack already exists, clean up the temp file.
+		return w.clean()
+	}
+
+	return nil
+}
+
+// fileExists checks whether path already exists as a regular file.
+// It returns (true, nil) for an existing regular file, (false, nil) when the
+// path does not exist, and (false, err) if the path exists but is not a
+// regular file (e.g. a directory or symlink).
+func fileExists(fs billy.Filesystem, path string) (bool, error) {
+	fi, err := fs.Lstat(path)
+	if err != nil {
+		return false, nil
+	}
+	if !fi.Mode().IsRegular() {
+		return false, fmt.Errorf("unexpected file type for %q: %s", path, fi.Mode().Type())
+	}
+	return true, nil
 }
 
 func (w *PackWriter) encodeIdx(writer io.Writer) error {
@@ -226,7 +269,6 @@ func (s *syncedReader) sleep() {
 		atomic.StoreUint32(&s.blocked, 1)
 		<-s.news
 	}
-
 }
 
 func (s *syncedReader) Seek(offset int64, whence int) (int64, error) {
@@ -281,5 +323,17 @@ func (w *ObjectWriter) save() error {
 	hex := w.Hash().String()
 	file := w.fs.Join(objectsPath, hex[0:2], hex[2:hash.HexSize])
 
-	return w.fs.Rename(w.f.Name(), file)
+	// Loose objects are content addressable, if they already exist
+	// we can safely delete the temporary file and short-circuit the
+	// operation.
+	if _, err := w.fs.Lstat(file); err == nil || os.IsExist(err) {
+		return w.fs.Remove(w.f.Name())
+	}
+
+	if err := w.fs.Rename(w.f.Name(), file); err != nil {
+		return err
+	}
+	fixPermissions(w.fs, file)
+
+	return nil
 }

vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/writers_unix.go

@@ -0,0 +1,29 @@
+//go:build !windows
+
+package dotgit
+
+import (
+	"github.com/go-git/go-billy/v5"
+	"github.com/go-git/go-git/v5/utils/trace"
+)
+
+func fixPermissions(fs billy.Filesystem, path string) {
+	if chmodFS, ok := fs.(billy.Chmod); ok {
+		if err := chmodFS.Chmod(path, 0o444); err != nil {
+			trace.General.Printf("failed to chmod %s: %v", path, err)
+		}
+	}
+}
+
+func isReadOnly(fs billy.Filesystem, path string) (bool, error) {
+	fi, err := fs.Stat(path)
+	if err != nil {
+		return false, err
+	}
+
+	if fi.Mode().Perm() == 0o444 {
+		return true, nil
+	}
+
+	return false, nil
+}

vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/writers_windows.go

@@ -0,0 +1,58 @@
+//go:build windows
+
+package dotgit
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/go-git/go-billy/v5"
+	"github.com/go-git/go-git/v5/utils/trace"
+	"golang.org/x/sys/windows"
+)
+
+func fixPermissions(fs billy.Filesystem, path string) {
+	fullpath := filepath.Join(fs.Root(), path)
+	p, err := windows.UTF16PtrFromString(fullpath)
+	if err != nil {
+		trace.General.Printf("failed to chmod %s: %v", fullpath, err)
+		return
+	}
+
+	attrs, err := windows.GetFileAttributes(p)
+	if err != nil {
+		trace.General.Printf("failed to chmod %s: %v", fullpath, err)
+		return
+	}
+
+	if attrs&windows.FILE_ATTRIBUTE_READONLY != 0 {
+		return
+	}
+
+	err = windows.SetFileAttributes(p,
+		attrs|windows.FILE_ATTRIBUTE_READONLY,
+	)
+
+	if err != nil {
+		trace.General.Printf("failed to chmod %s: %v", fullpath, err)
+	}
+}
+
+func isReadOnly(fs billy.Filesystem, path string) (bool, error) {
+	fullpath := filepath.Join(fs.Root(), path)
+	p, err := windows.UTF16PtrFromString(fullpath)
+	if err != nil {
+		return false, fmt.Errorf("%w: %q", err, fullpath)
+	}
+
+	attrs, err := windows.GetFileAttributes(p)
+	if err != nil {
+		return false, fmt.Errorf("%w: %q", err, fullpath)
+	}
+
+	if attrs&windows.FILE_ATTRIBUTE_READONLY != 0 {
+		return true, nil
+	}
+
+	return false, nil
+}

vendor/github.com/go-git/go-git/v5/storage/filesystem/index.go

@@ -48,6 +48,11 @@ func (s *IndexStorage) Index() (i *index.Index, err error) {
 
 	defer ioutil.CheckClose(f, &err)
 
+	fi, statErr := s.dir.Fs().Stat(f.Name())
+	if statErr == nil {
+		idx.ModTime = fi.ModTime()
+	}
+
 	d := index.NewDecoder(f)
 	err = d.Decode(idx)
 	return idx, err

vendor/github.com/go-git/go-git/v5/storage/memory/storage.go

@@ -69,7 +69,11 @@ type IndexStorage struct {
 	index *index.Index
 }
 
+// SetIndex stores the given index.
+// Note: this method sets idx.ModTime to simulate filesystem storage behavior.
 func (c *IndexStorage) SetIndex(idx *index.Index) error {
+	// Set ModTime to enable racy git detection in the metadata optimization.
+	idx.ModTime = time.Now()
 	c.index = idx
 	return nil
 }

vendor/github.com/go-git/go-git/v5/utils/merkletrie/filesystem/node.go

@@ -4,9 +4,11 @@ import (
 	"io"
 	"os"
 	"path"
+	"time"
 
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/filemode"
+	"github.com/go-git/go-git/v5/plumbing/format/index"
 	"github.com/go-git/go-git/v5/utils/merkletrie/noder"
 
 	"github.com/go-git/go-billy/v5"
@@ -16,6 +18,14 @@ var ignore = map[string]bool{
 	".git": true,
 }
 
+// Options contains configuration for the filesystem node.
+type Options struct {
+	// Index is used to enable the metadata-first comparison optimization while
+	// correctly handling the "racy git" condition. If no index is provided,
+	// the function works without the optimization.
+	Index *index.Index
+}
+
 // The node represents a file or a directory in a billy.Filesystem. It
 // implements the interface noder.Noder of merkletrie package.
 //
@@ -24,6 +34,8 @@ var ignore = map[string]bool{
 type node struct {
 	fs         billy.Filesystem
 	submodules map[string]plumbing.Hash
+	idx        *index.Index
+	idxMap     map[string]*index.Entry
 
 	path     string
 	hash     []byte
@@ -31,6 +43,7 @@ type node struct {
 	isDir    bool
 	mode     os.FileMode
 	size     int64
+	modTime  time.Time
 }
 
 // NewRootNode returns the root node based on a given billy.Filesystem.
@@ -42,7 +55,41 @@ func NewRootNode(
 	fs billy.Filesystem,
 	submodules map[string]plumbing.Hash,
 ) noder.Noder {
-	return &node{fs: fs, submodules: submodules, isDir: true}
+	return NewRootNodeWithOptions(fs, submodules, Options{})
+}
+
+// NewRootNodeWithOptions returns the root node based on a given billy.Filesystem
+// with options to set an index. Providing an index enables the metadata-first
+// comparison optimization while correctly handling the "racy git" condition. If
+// no index is provided, the function works without the optimization.
+//
+// The index's ModTime field is used to detect the racy git condition. When a file's
+// mtime equals or is newer than the index ModTime, we must hash the file content
+// even if other metadata matches, because the file may have been modified in the
+// same second that the index was written.
+//
+// Reference: https://git-scm.com/docs/racy-git
+func NewRootNodeWithOptions(
+	fs billy.Filesystem,
+	submodules map[string]plumbing.Hash,
+	options Options,
+) noder.Noder {
+	var idxMap map[string]*index.Entry
+
+	if options.Index != nil {
+		idxMap = make(map[string]*index.Entry, len(options.Index.Entries))
+		for _, entry := range options.Index.Entries {
+			idxMap[entry.Name] = entry
+		}
+	}
+
+	return &node{
+		fs:         fs,
+		submodules: submodules,
+		idx:        options.Index,
+		idxMap:     idxMap,
+		isDir:      true,
+	}
 }
 
 // Hash the hash of a filesystem is the result of concatenating the computed
@@ -133,11 +180,14 @@ func (n *node) newChildNode(file os.FileInfo) (*node, error) {
 	node := &node{
 		fs:         n.fs,
 		submodules: n.submodules,
+		idx:        n.idx,
+		idxMap:     n.idxMap,
 
 		path:    path,
 		isDir:   file.IsDir(),
 		size:    file.Size(),
 		mode:    file.Mode(),
+		modTime: file.ModTime(),
 	}
 
 	if _, isSubmodule := n.submodules[path]; isSubmodule {
@@ -161,6 +211,16 @@ func (n *node) calculateHash() {
 		n.hash = append(submoduleHash[:], filemode.Submodule.Bytes()...)
 		return
 	}
+
+	if n.idxMap != nil {
+		if entry, ok := n.idxMap[n.path]; ok {
+			if n.metadataMatches(entry) {
+				n.hash = append(entry.Hash[:], mode.Bytes()...)
+				return
+			}
+		}
+	}
+
 	var hash plumbing.Hash
 	if n.mode&os.ModeSymlink != 0 {
 		hash = n.doCalculateHashForSymlink()
@@ -170,6 +230,44 @@ func (n *node) calculateHash() {
 	n.hash = append(hash[:], mode.Bytes()...)
 }
 
+func (n *node) metadataMatches(entry *index.Entry) bool {
+	if entry == nil {
+		return false
+	}
+
+	if uint32(n.size) != entry.Size {
+		return false
+	}
+
+	if !n.modTime.IsZero() && !n.modTime.Equal(entry.ModifiedAt) {
+		return false
+	}
+
+	mode, err := filemode.NewFromOSFileMode(n.mode)
+	if err != nil {
+		return false
+	}
+
+	if mode != entry.Mode {
+		return false
+	}
+
+	if n.idx != nil && !n.idx.ModTime.IsZero() && !n.modTime.IsZero() {
+		if !n.modTime.Before(n.idx.ModTime) {
+			return false
+		}
+	}
+
+	// If we couldn't perform the racy git check (idx is nil or idx.ModTime is zero),
+	// we cannot safely rely on metadata alone — force content hashing.
+	// This can occur with in-memory storage where the index file timestamp is unavailable.
+	if n.idx == nil || n.idx.ModTime.IsZero() {
+		return false
+	}
+
+	return true
+}
+
 func (n *node) doCalculateHashForRegular() plumbing.Hash {
 	f, err := n.fs.Open(n.path)
 	if err != nil {

vendor/github.com/go-git/go-git/v5/worktree.go

@@ -385,7 +385,8 @@ func (w *Worktree) resetIndex(t *object.Tree, dirs []string, files []string) ([]
 		return nil, err
 	}
 
-	var removedFiles []string
+	removedFiles := make([]string, 0, len(changes))
+	filesMap := buildFilePathMap(files)
 	for _, ch := range changes {
 		a, err := ch.Action()
 		if err != nil {
@@ -407,7 +408,7 @@ func (w *Worktree) resetIndex(t *object.Tree, dirs []string, files []string) ([]
 		}
 
 		if len(files) > 0 {
-			contains := inFiles(files, name)
+			contains := inFiles(filesMap, name)
 			if !contains {
 				continue
 			}
@@ -436,15 +437,11 @@ func (w *Worktree) resetIndex(t *object.Tree, dirs []string, files []string) ([]
 	return removedFiles, w.r.Storer.SetIndex(idx)
 }
 
-func inFiles(files []string, v string) bool {
+// inFiles checks if the given file is in the list of files. The incoming filepaths in files should be cleaned before calling this function.
+func inFiles(files map[string]struct{}, v string) bool {
 	v = filepath.Clean(v)
-	for _, s := range files {
+	_, exists := files[v]
-		if filepath.Clean(s) == v {
+	return exists
-			return true
-		}
-	}
-
-	return false
 }
 
 func (w *Worktree) resetWorktree(t *object.Tree, files []string) error {
@@ -459,6 +456,7 @@ func (w *Worktree) resetWorktree(t *object.Tree, files []string) error {
 	}
 	b := newIndexBuilder(idx)
 
+	filesMap := buildFilePathMap(files)
 	for _, ch := range changes {
 		if err := w.validChange(ch); err != nil {
 			return err
@@ -476,7 +474,7 @@ func (w *Worktree) resetWorktree(t *object.Tree, files []string) error {
 				continue
 			}
 
-			contains := inFiles(files, file)
+			contains := inFiles(filesMap, file)
 			if !contains {
 				continue
 			}
@@ -1206,3 +1204,16 @@ func (b *indexBuilder) Add(e *index.Entry) {
 func (b *indexBuilder) Remove(name string) {
 	delete(b.entries, filepath.ToSlash(name))
 }
+
+// buildFilePathMap creates a map of cleaned file paths for efficient lookup.
+// Returns nil if the input slice is empty.
+func buildFilePathMap(files []string) map[string]struct{} {
+	if len(files) == 0 {
+		return nil
+	}
+	filesMap := make(map[string]struct{}, len(files))
+	for _, f := range files {
+		filesMap[filepath.Clean(f)] = struct{}{}
+	}
+	return filesMap
+}

vendor/github.com/go-git/go-git/v5/worktree_status.go

@@ -141,7 +141,7 @@ func (w *Worktree) diffStagingWithWorktree(reverse, excludeIgnoredChanges bool)
 		return nil, err
 	}
 
-	to := filesystem.NewRootNode(w.Filesystem, submodules)
+	to := filesystem.NewRootNodeWithOptions(w.Filesystem, submodules, filesystem.Options{Index: idx})
 
 	var c merkletrie.Changes
 	if reverse {

vendor/github.com/pjbgf/sha1cd/Dockerfile.arm

@@ -1,4 +1,4 @@
-FROM golang:1.24@sha256:14fd8a55e59a560704e5fc44970b301d00d344e45d6b914dda228e09f359a088
+FROM golang:1.25@sha256:31c1e53dfc1cc2d269deec9c83f58729fa3c53dc9a576f6426109d1e319e9e9a
 
 ENV GOOS=linux
 ENV GOARCH=arm

vendor/github.com/pjbgf/sha1cd/Dockerfile.arm64

@@ -1,4 +1,4 @@
-FROM golang:1.24@sha256:14fd8a55e59a560704e5fc44970b301d00d344e45d6b914dda228e09f359a088
+FROM golang:1.25@sha256:31c1e53dfc1cc2d269deec9c83f58729fa3c53dc9a576f6426109d1e319e9e9a
 
 ENV GOOS=linux
 ENV GOARCH=arm64

vendor/github.com/pjbgf/sha1cd/sha1cd.go

@@ -12,7 +12,6 @@ package sha1cd
 // Original: https://github.com/golang/go/blob/master/src/crypto/sha1/sha1.go
 
 import (
-	"crypto"
 	"encoding/binary"
 	"errors"
 	"hash"
@@ -20,10 +19,6 @@ import (
 	shared "github.com/pjbgf/sha1cd/internal"
 )
 
-func init() {
-	crypto.RegisterHash(crypto.SHA1, New)
-}
-
 // The size of a SHA-1 checksum in bytes.
 const Size = shared.Size
 

vendor/github.com/pjbgf/sha1cd/sha1cdblock_amd64.go

@@ -37,9 +37,9 @@ func block(dig *digest, p []byte) {
 		chunk := p[:shared.Chunk]
 
 		blockAMD64(dig.h[:], chunk, m1[:], cs[:])
-		rectifyCompressionState(m1, &cs)
+		rectifyCompressionState(&m1, &cs)
 
-		col := checkCollision(m1, cs, dig.h)
+		col := checkCollision(&m1, &cs, &dig.h)
 		if col {
 			dig.col = true
 

vendor/github.com/pjbgf/sha1cd/sha1cdblock_amd64.s

@@ -11,11 +11,11 @@
 // Reference implementations:
 // 	- https://github.com/golang/go/blob/master/src/crypto/sha1/sha1block_amd64.s
 
+// Reverse the dword order in abcd via PSHUFD then store the 16 bytes in one
+// move, instead of issuing four VPEXTRD's that each go through the store port.
 #define LOADCS(abcd, e, index, target) \
-	VPEXTRD $3, abcd, ((index*20)+0)(target); \
+	VPSHUFD $0x1B, abcd, X8; \
-	VPEXTRD $2, abcd, ((index*20)+4)(target); \
+	VMOVDQU X8, ((index*20)+0)(target); \
-	VPEXTRD $1, abcd, ((index*20)+8)(target); \
-	VPEXTRD $0, abcd, ((index*20)+12)(target); \
 	MOVL e, ((index*20)+16)(target);
 
 #define LOADM1(m1, index, target) \

vendor/github.com/pjbgf/sha1cd/sha1cdblock_arm64.go

@@ -34,8 +34,8 @@ func block(dig *digest, p []byte) {
 
 		blockARM64(dig.h[:], chunk, m1[:], cs[:])
 
-		rectifyCompressionState(m1, &cs)
+		rectifyCompressionState(&m1, &cs)
-		col := checkCollision(m1, cs, dig.h)
+		col := checkCollision(&m1, &cs, &dig.h)
 		if col {
 			dig.col = true
 

vendor/github.com/pjbgf/sha1cd/sha1cdblock_generic.go

@@ -127,7 +127,8 @@ func blockGeneric(dig *digest, p []byte) {
 		}
 
 		if hi == 1 {
-			col := checkCollision(m1, cs, [shared.WordBuffers]uint32{h0, h1, h2, h3, h4})
+			h := [shared.WordBuffers]uint32{h0, h1, h2, h3, h4}
+			col := checkCollision(&m1, &cs, &h)
 			if col {
 				dig.col = true
 				hi++
@@ -143,23 +144,23 @@ func blockGeneric(dig *digest, p []byte) {
 
 //go:noinline
 func checkCollision(
-	m1 [shared.Rounds]uint32,
+	m1 *[shared.Rounds]uint32,
-	cs [shared.PreStepState][shared.WordBuffers]uint32,
+	cs *[shared.PreStepState][shared.WordBuffers]uint32,
-	h [shared.WordBuffers]uint32,
+	h *[shared.WordBuffers]uint32,
 ) bool {
 	if mask := ubc.CalculateDvMask(m1); mask != 0 {
 		dvs := ubc.SHA1_dvs()
 
 		for i := 0; dvs[i].DvType != 0; i++ {
 			if (mask & ((uint32)(1) << uint32(dvs[i].MaskB))) != 0 {
-				var csState [shared.WordBuffers]uint32
+				var csState *[shared.WordBuffers]uint32
 				switch dvs[i].TestT {
 				case 58:
-					csState = cs[1]
+					csState = &cs[1]
 				case 65:
-					csState = cs[2]
+					csState = &cs[2]
 				case 0:
-					csState = cs[0]
+					csState = &cs[0]
 				default:
 					panic(fmt.Sprintf("dvs data is trying to use a testT that isn't available: %d", dvs[i].TestT))
 				}
@@ -168,7 +169,7 @@ func checkCollision(
 					dvs[i].TestT, // testT is the step number
 					// m2 is a secondary message created XORing with
 					// ubc's DM prior to the SHA recompression step.
-					m1, dvs[i].Dm,
+					m1, &dvs[i].Dm,
 					csState,
 					h)
 
@@ -182,8 +183,8 @@ func checkCollision(
 }
 
 //go:nosplit
-func hasCollided(step uint32, m1, dm [shared.Rounds]uint32,
+func hasCollided(step uint32, m1, dm *[shared.Rounds]uint32,
-	state [shared.WordBuffers]uint32, h [shared.WordBuffers]uint32) bool {
+	state *[shared.WordBuffers]uint32, h *[shared.WordBuffers]uint32) bool {
 	// Intermediary Hash Value.
 	ihv := [shared.WordBuffers]uint32{}
 
@@ -282,7 +283,7 @@ func hasCollided(step uint32, m1, dm [shared.Rounds]uint32,
 //
 //go:nosplit
 func rectifyCompressionState(
-	m1 [shared.Rounds]uint32,
+	m1 *[shared.Rounds]uint32,
 	cs *[shared.PreStepState][shared.WordBuffers]uint32,
 ) {
 	if cs == nil {

vendor/github.com/pjbgf/sha1cd/ubc/ubc.go

@@ -29,7 +29,10 @@ type DvInfo struct {
 // bitconditions for that DV have been met.
 //
 //go:nosplit
-func CalculateDvMask(W [80]uint32) uint32 {
+func CalculateDvMask(W *[80]uint32) uint32 {
+	if W == nil {
+		return 0
+	}
 	mask := uint32(0xFFFFFFFF)
 	mask &= (((((W[44] ^ W[45]) >> 29) & 1) - 1) | ^(DV_I_48_0_bit | DV_I_51_0_bit | DV_I_52_0_bit | DV_II_45_0_bit | DV_II_46_0_bit | DV_II_50_0_bit | DV_II_51_0_bit))
 	mask &= (((((W[49] ^ W[50]) >> 29) & 1) - 1) | ^(DV_I_46_0_bit | DV_II_45_0_bit | DV_II_50_0_bit | DV_II_51_0_bit | DV_II_55_0_bit | DV_II_56_0_bit))

vendor/golang.org/x/crypto/ssh/agent/server.go

@@ -36,7 +36,7 @@ func (s *server) processRequestBytes(reqData []byte) []byte {
 		return []byte{agentFailure}
 	}
 
-	if err == nil && rep == nil {
+	if rep == nil {
 		return []byte{agentSuccess}
 	}
 

vendor/golang.org/x/crypto/ssh/cipher.go

@@ -586,7 +586,7 @@ func (c *cbcCipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader
 
 	// Length of encrypted portion of the packet (header, payload, padding).
 	// Enforce minimum padding and packet size.
-	encLength := maxUInt32(prefixLen+len(packet)+cbcMinPaddingSize, cbcMinPaddingSize)
+	encLength := maxUInt32(prefixLen+len(packet)+cbcMinPaddingSize, cbcMinPacketSize)
 	// Enforce block size.
 	encLength = (encLength + effectiveBlockSize - 1) / effectiveBlockSize * effectiveBlockSize
 

vendor/golang.org/x/crypto/ssh/client_auth.go

@@ -274,10 +274,14 @@ func pickSignatureAlgorithm(signer Signer, extensions map[string][]byte) (MultiA
 	}
 
 	// Filter algorithms based on those supported by MultiAlgorithmSigner.
+	// Iterate over the signer's algorithms first to preserve its preference order.
+	supportedKeyAlgos := algorithmsForKeyFormat(keyFormat)
 	var keyAlgos []string
-	for _, algo := range algorithmsForKeyFormat(keyFormat) {
+	for _, signerAlgo := range as.Algorithms() {
-		if slices.Contains(as.Algorithms(), underlyingAlgo(algo)) {
+		if idx := slices.IndexFunc(supportedKeyAlgos, func(algo string) bool {
-			keyAlgos = append(keyAlgos, algo)
+			return underlyingAlgo(algo) == signerAlgo
+		}); idx >= 0 {
+			keyAlgos = append(keyAlgos, supportedKeyAlgos[idx])
 		}
 	}
 

vendor/golang.org/x/sys/cpu/asm_darwin_arm64_gc.s

@@ -0,0 +1,12 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build darwin && arm64 && gc
+
+#include "textflag.h"
+
+TEXT libc_sysctlbyname_trampoline<>(SB),NOSPLIT,$0-0
+	JMP	libc_sysctlbyname(SB)
+GLOBL	·libc_sysctlbyname_trampoline_addr(SB), RODATA, $8
+DATA	·libc_sysctlbyname_trampoline_addr(SB)/8, $libc_sysctlbyname_trampoline<>(SB)

vendor/golang.org/x/sys/cpu/cpu_arm64.go

@@ -44,14 +44,11 @@ func initOptions() {
 }
 
 func archInit() {
-	switch runtime.GOOS {
+	if runtime.GOOS == "freebsd" {
-	case "freebsd":
 		readARM64Registers()
-	case "linux", "netbsd", "openbsd", "windows":
+	} else {
+		// Most platforms don't seem to allow directly reading these registers.
 		doinit()
-	default:
-		// Many platforms don't seem to allow reading these registers.
-		setMinimalFeatures()
 	}
 }
 

vendor/golang.org/x/sys/cpu/cpu_darwin_arm64.go

@@ -0,0 +1,67 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build darwin && arm64 && gc
+
+package cpu
+
+func doinit() {
+	setMinimalFeatures()
+
+	// The feature flags are explained in [Instruction Set Detection].
+	// There are some differences between MacOS versions:
+	//
+	// MacOS 11 and 12 do not have "hw.optional" sysctl values for some of the features.
+	//
+	// MacOS 13 changed some of the naming conventions to align with ARM Architecture Reference Manual.
+	// For example "hw.optional.armv8_2_sha512" became "hw.optional.arm.FEAT_SHA512".
+	// It currently checks both to stay compatible with MacOS 11 and 12.
+	// The old names also work with MacOS 13, however it's not clear whether
+	// they will continue working with future OS releases.
+	//
+	// Once MacOS 12 is no longer supported the old names can be removed.
+	//
+	// [Instruction Set Detection]: https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_instruction_set_characteristics
+
+	// Encryption, hashing and checksum capabilities
+
+	// For the following flags there are no MacOS 11 sysctl flags.
+	ARM64.HasAES = true || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_AES\x00"))
+	ARM64.HasPMULL = true || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_PMULL\x00"))
+	ARM64.HasSHA1 = true || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SHA1\x00"))
+	ARM64.HasSHA2 = true || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SHA256\x00"))
+
+	ARM64.HasSHA3 = darwinSysctlEnabled([]byte("hw.optional.armv8_2_sha3\x00")) || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SHA3\x00"))
+	ARM64.HasSHA512 = darwinSysctlEnabled([]byte("hw.optional.armv8_2_sha512\x00")) || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SHA512\x00"))
+
+	ARM64.HasCRC32 = darwinSysctlEnabled([]byte("hw.optional.armv8_crc32\x00"))
+
+	// Atomic and memory ordering
+	ARM64.HasATOMICS = darwinSysctlEnabled([]byte("hw.optional.armv8_1_atomics\x00")) || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_LSE\x00"))
+	ARM64.HasLRCPC = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_LRCPC\x00"))
+
+	// SIMD and floating point capabilities
+	ARM64.HasFPHP = darwinSysctlEnabled([]byte("hw.optional.neon_fp16\x00")) || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_FP16\x00"))
+	ARM64.HasASIMDHP = darwinSysctlEnabled([]byte("hw.optional.neon_hpfp\x00")) || darwinSysctlEnabled([]byte("hw.optional.AdvSIMD_HPFPCvt\x00"))
+	ARM64.HasASIMDRDM = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_RDM\x00"))
+	ARM64.HasASIMDDP = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_DotProd\x00"))
+	ARM64.HasASIMDFHM = darwinSysctlEnabled([]byte("hw.optional.armv8_2_fhm\x00")) || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_FHM\x00"))
+	ARM64.HasI8MM = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_I8MM\x00"))
+
+	ARM64.HasJSCVT = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_JSCVT\x00"))
+	ARM64.HasFCMA = darwinSysctlEnabled([]byte("hw.optional.armv8_3_compnum\x00")) || darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_FCMA\x00"))
+
+	// Miscellaneous
+	ARM64.HasDCPOP = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_DPB\x00"))
+	ARM64.HasEVTSTRM = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_ECV\x00"))
+	ARM64.HasDIT = darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_DIT\x00"))
+
+	// Not supported, but added for completeness
+	ARM64.HasCPUID = false
+
+	ARM64.HasSM3 = false  // darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SM3\x00"))
+	ARM64.HasSM4 = false  // darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SM4\x00"))
+	ARM64.HasSVE = false  // darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SVE\x00"))
+	ARM64.HasSVE2 = false // darwinSysctlEnabled([]byte("hw.optional.arm.FEAT_SVE2\x00"))
+}

vendor/golang.org/x/sys/cpu/cpu_darwin_arm64_other.go

@@ -0,0 +1,31 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build darwin && arm64 && !gc
+
+package cpu
+
+import "runtime"
+
+func doinit() {
+	setMinimalFeatures()
+
+	ARM64.HasASIMD = true
+	ARM64.HasFP = true
+
+	// Go already assumes these to be available because they were on the M1
+	// and these are supported on all Apple arm64 chips.
+	ARM64.HasAES = true
+	ARM64.HasPMULL = true
+	ARM64.HasSHA1 = true
+	ARM64.HasSHA2 = true
+
+	if runtime.GOOS != "ios" {
+		// Apple A7 processors do not support these, however
+		// M-series SoCs are at least armv8.4-a
+		ARM64.HasCRC32 = true   // armv8.1
+		ARM64.HasATOMICS = true // armv8.2
+		ARM64.HasJSCVT = true   // armv8.3, if HasFP
+	}
+}

vendor/golang.org/x/sys/cpu/cpu_gccgo_arm64.go

@@ -9,3 +9,4 @@ package cpu
 func getisar0() uint64 { return 0 }
 func getisar1() uint64 { return 0 }
 func getpfr0() uint64  { return 0 }
+func getzfr0() uint64  { return 0 }

vendor/golang.org/x/sys/cpu/cpu_other_arm64.go

@@ -2,8 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !linux && !netbsd && !openbsd && !windows && arm64
+//go:build !darwin && !linux && !netbsd && !openbsd && arm64
 
 package cpu
 
-func doinit() {}
+func doinit() {
+	setMinimalFeatures()
+}

vendor/golang.org/x/sys/cpu/cpu_windows_arm64.go

@@ -1,42 +0,0 @@
-// Copyright 2026 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package cpu
-
-import (
-	"golang.org/x/sys/windows"
-)
-
-func doinit() {
-	// set HasASIMD and HasFP to true as per
-	// https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#base-requirements
-	//
-	// The ARM64 version of Windows always presupposes that it's running on an ARMv8 or later architecture.
-	// Both floating-point and NEON support are presumed to be present in hardware.
-	//
-	ARM64.HasASIMD = true
-	ARM64.HasFP = true
-
-	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) {
-		ARM64.HasAES = true
-		ARM64.HasPMULL = true
-		ARM64.HasSHA1 = true
-		ARM64.HasSHA2 = true
-	}
-	ARM64.HasSHA3 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SHA3_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasCRC32 = windows.IsProcessorFeaturePresent(windows.PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasSHA512 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SHA512_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasATOMICS = windows.IsProcessorFeaturePresent(windows.PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE)
-	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE) {
-		ARM64.HasASIMDDP = true
-		ARM64.HasASIMDRDM = true
-	}
-	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE) {
-		ARM64.HasLRCPC = true
-		ARM64.HasSM3 = true
-	}
-	ARM64.HasSVE = windows.IsProcessorFeaturePresent(windows.PF_ARM_SVE_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasSVE2 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SVE2_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasJSCVT = windows.IsProcessorFeaturePresent(windows.PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE)
-}

vendor/golang.org/x/sys/cpu/syscall_darwin_arm64_gc.go

@@ -0,0 +1,54 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Minimal copy from internal/cpu and runtime to make sysctl calls.
+
+//go:build darwin && arm64 && gc
+
+package cpu
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+type Errno = syscall.Errno
+
+// adapted from internal/cpu/cpu_arm64_darwin.go
+func darwinSysctlEnabled(name []byte) bool {
+	out := int32(0)
+	nout := unsafe.Sizeof(out)
+	if ret := sysctlbyname(&name[0], (*byte)(unsafe.Pointer(&out)), &nout, nil, 0); ret != nil {
+		return false
+	}
+	return out > 0
+}
+
+//go:cgo_import_dynamic libc_sysctl sysctl "/usr/lib/libSystem.B.dylib"
+
+var libc_sysctlbyname_trampoline_addr uintptr
+
+// adapted from runtime/sys_darwin.go in the pattern of sysctl() above, as defined in x/sys/unix
+func sysctlbyname(name *byte, old *byte, oldlen *uintptr, new *byte, newlen uintptr) error {
+	if _, _, err := syscall_syscall6(
+		libc_sysctlbyname_trampoline_addr,
+		uintptr(unsafe.Pointer(name)),
+		uintptr(unsafe.Pointer(old)),
+		uintptr(unsafe.Pointer(oldlen)),
+		uintptr(unsafe.Pointer(new)),
+		uintptr(newlen),
+		0,
+	); err != 0 {
+		return err
+	}
+
+	return nil
+}
+
+//go:cgo_import_dynamic libc_sysctlbyname sysctlbyname "/usr/lib/libSystem.B.dylib"
+
+// Implemented in the runtime package (runtime/sys_darwin.go)
+func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
+
+//go:linkname syscall_syscall6 syscall.syscall6

vendor/golang.org/x/sys/unix/ztypes_linux.go

@@ -684,12 +684,17 @@ const (
 	RTN_THROW             = 0x9
 	RTN_NAT               = 0xa
 	RTN_XRESOLVE          = 0xb
+	PREFIX_UNSPEC         = 0x0
+	PREFIX_ADDRESS        = 0x1
+	PREFIX_CACHEINFO      = 0x2
 	SizeofNlMsghdr        = 0x10
 	SizeofNlMsgerr        = 0x14
 	SizeofRtGenmsg        = 0x1
 	SizeofNlAttr          = 0x4
 	SizeofRtAttr          = 0x4
 	SizeofIfInfomsg       = 0x10
+	SizeofPrefixmsg       = 0xc
+	SizeofPrefixCacheinfo = 0x8
 	SizeofIfAddrmsg       = 0x8
 	SizeofIfAddrlblmsg    = 0xc
 	SizeofIfaCacheinfo    = 0x10
@@ -735,6 +740,22 @@ type IfInfomsg struct {
 	Change uint32
 }
 
+type Prefixmsg struct {
+	Family  uint8
+	Pad1    uint8
+	Pad2    uint16
+	Ifindex int32
+	Type    uint8
+	Len     uint8
+	Flags   uint8
+	Pad3    uint8
+}
+
+type PrefixCacheinfo struct {
+	Preferred_time uint32
+	Valid_time     uint32
+}
+
 type IfAddrmsg struct {
 	Family    uint8
 	Prefixlen uint8

vendor/golang.org/x/sys/windows/aliases.go

@@ -8,5 +8,6 @@ package windows
 
 import "syscall"
 
+type Signal = syscall.Signal
 type Errno = syscall.Errno
 type SysProcAttr = syscall.SysProcAttr

vendor/golang.org/x/sys/windows/dll_windows.go

@@ -163,42 +163,7 @@ func (p *Proc) Addr() uintptr {
 // (according to the semantics of the specific function being called) before consulting
 // the error. The error will be guaranteed to contain windows.Errno.
 func (p *Proc) Call(a ...uintptr) (r1, r2 uintptr, lastErr error) {
-	switch len(a) {
+	return syscall.SyscallN(p.Addr(), a...)
-	case 0:
-		return syscall.Syscall(p.Addr(), uintptr(len(a)), 0, 0, 0)
-	case 1:
-		return syscall.Syscall(p.Addr(), uintptr(len(a)), a[0], 0, 0)
-	case 2:
-		return syscall.Syscall(p.Addr(), uintptr(len(a)), a[0], a[1], 0)
-	case 3:
-		return syscall.Syscall(p.Addr(), uintptr(len(a)), a[0], a[1], a[2])
-	case 4:
-		return syscall.Syscall6(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], 0, 0)
-	case 5:
-		return syscall.Syscall6(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], 0)
-	case 6:
-		return syscall.Syscall6(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5])
-	case 7:
-		return syscall.Syscall9(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], 0, 0)
-	case 8:
-		return syscall.Syscall9(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], 0)
-	case 9:
-		return syscall.Syscall9(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8])
-	case 10:
-		return syscall.Syscall12(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], 0, 0)
-	case 11:
-		return syscall.Syscall12(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], 0)
-	case 12:
-		return syscall.Syscall12(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11])
-	case 13:
-		return syscall.Syscall15(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], 0, 0)
-	case 14:
-		return syscall.Syscall15(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], 0)
-	case 15:
-		return syscall.Syscall15(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], a[14])
-	default:
-		panic("Call " + p.Name + " with too many arguments " + itoa(len(a)) + ".")
-	}
 }
 
 // A LazyDLL implements access to a single DLL.

vendor/golang.org/x/sys/windows/security_windows.go

@@ -1438,13 +1438,17 @@ func GetSecurityInfo(handle Handle, objectType SE_OBJECT_TYPE, securityInformati
 }
 
 // GetNamedSecurityInfo queries the security information for a given named object and returns the self-relative security
-// descriptor result on the Go heap.
+// descriptor result on the Go heap. The security descriptor might be nil, even when err is nil, if the object exists
+// but has no security descriptor.
 func GetNamedSecurityInfo(objectName string, objectType SE_OBJECT_TYPE, securityInformation SECURITY_INFORMATION) (sd *SECURITY_DESCRIPTOR, err error) {
 	var winHeapSD *SECURITY_DESCRIPTOR
 	err = getNamedSecurityInfo(objectName, objectType, securityInformation, nil, nil, nil, nil, &winHeapSD)
 	if err != nil {
 		return
 	}
+	if winHeapSD == nil {
+		return nil, nil
+	}
 	defer LocalFree(Handle(unsafe.Pointer(winHeapSD)))
 	return winHeapSD.copySelfRelativeSecurityDescriptor(), nil
 }

vendor/golang.org/x/sys/windows/syscall_windows.go

@@ -1490,20 +1490,6 @@ func Getgid() (gid int)                  { return -1 }
 func Getegid() (egid int)                { return -1 }
 func Getgroups() (gids []int, err error) { return nil, syscall.EWINDOWS }
 
-type Signal int
-
-func (s Signal) Signal() {}
-
-func (s Signal) String() string {
-	if 0 <= s && int(s) < len(signals) {
-		str := signals[s]
-		if str != "" {
-			return str
-		}
-	}
-	return "signal " + itoa(int(s))
-}
-
 func LoadCreateSymbolicLink() error {
 	return procCreateSymbolicLinkW.Find()
 }

vendor/modules.txt

@@ -80,16 +80,16 @@ github.com/go-git/gcfg
 github.com/go-git/gcfg/scanner
 github.com/go-git/gcfg/token
 github.com/go-git/gcfg/types
-# github.com/go-git/go-billy/v5 v5.7.0
+# github.com/go-git/go-billy/v5 v5.9.0
-## explicit; go 1.23.0
+## explicit; go 1.25.0
 github.com/go-git/go-billy/v5
 github.com/go-git/go-billy/v5/helper/chroot
 github.com/go-git/go-billy/v5/helper/polyfill
 github.com/go-git/go-billy/v5/memfs
 github.com/go-git/go-billy/v5/osfs
 github.com/go-git/go-billy/v5/util
-# github.com/go-git/go-git/v5 v5.16.5
+# github.com/go-git/go-git/v5 v5.19.0
-## explicit; go 1.24.0
+## explicit; go 1.25.0
 github.com/go-git/go-git/v5
 github.com/go-git/go-git/v5/config
 github.com/go-git/go-git/v5/internal/path_util
@@ -157,7 +157,7 @@ github.com/mattn/go-isatty
 # github.com/mitchellh/go-homedir v1.1.0
 ## explicit
 github.com/mitchellh/go-homedir
-# github.com/pjbgf/sha1cd v0.5.0
+# github.com/pjbgf/sha1cd v0.6.0
 ## explicit; go 1.22
 github.com/pjbgf/sha1cd
 github.com/pjbgf/sha1cd/internal
@@ -177,8 +177,8 @@ github.com/spf13/pflag
 # github.com/xanzy/ssh-agent v0.3.3
 ## explicit; go 1.16
 github.com/xanzy/ssh-agent
-# golang.org/x/crypto v0.48.0
+# golang.org/x/crypto v0.50.0
-## explicit; go 1.24.0
+## explicit; go 1.25.0
 golang.org/x/crypto/argon2
 golang.org/x/crypto/blake2b
 golang.org/x/crypto/blowfish
@@ -195,13 +195,13 @@ golang.org/x/crypto/ssh
 golang.org/x/crypto/ssh/agent
 golang.org/x/crypto/ssh/internal/bcrypt_pbkdf
 golang.org/x/crypto/ssh/knownhosts
-# golang.org/x/net v0.50.0
+# golang.org/x/net v0.53.0
-## explicit; go 1.24.0
+## explicit; go 1.25.0
 golang.org/x/net/context
 golang.org/x/net/internal/socks
 golang.org/x/net/proxy
-# golang.org/x/sys v0.41.0
+# golang.org/x/sys v0.43.0
-## explicit; go 1.24.0
+## explicit; go 1.25.0
 golang.org/x/sys/cpu
 golang.org/x/sys/execabs
 golang.org/x/sys/unix