diff --git a/internal/app/help_topics.go b/internal/app/help_topics.go
index 7005d8ca..a76dbffe 100644
--- a/internal/app/help_topics.go
+++ b/internal/app/help_topics.go
@@ -292,9 +292,11 @@ func helpTopics(globals *pflag.FlagSet) []*cobra.Command {
 
 ` + indent(flagUsages(flags)) + `
 
-tea selects the repository from --repo, TEA_REPO, git config tea.repository or a
-Git remote (--remote, else the current branch's remote, upstream or origin, skipping
-remotes on instances without an account, or not on --host or the GITEA_TOKEN instance),
+tea selects the repository from --repo, TEA_REPO, git config tea.repository (tea repo
+set-default) or a Git remote (--remote, else the base remote pr checkout recorded, the
+current branch's remote, upstream or origin, skipping remotes on instances without an
+account, or not on --host or the GITEA_TOKEN instance). Like gh, a clone with upstream
+and origin targets upstream: a branch tracking origin does not select the fork,
 and the instance from the repository URL, --host, TEA_HOST or GITEA_INSTANCE_URL,
 default_host, or the only configured instance.
 
diff --git a/internal/git/discover.go b/internal/git/discover.go
index ec095880..4d5279ab 100644
--- a/internal/git/discover.go
+++ b/internal/git/discover.go
@@ -16,7 +16,7 @@ var ErrAmbiguousRemote = errors.New("ambiguous repository: select --remote or --
 
 // DiscoverRemote names the remote used for repository discovery: preferred when set, otherwise
 // the base remote pr checkout recorded for the current branch, the current branch's upstream
-// remote unless it is a pulls/<owner>/<repo> head remote, then upstream, origin, or the only remote.
+// remote unless it is a pulls/<owner>/<repo> head remote or origin beside an upstream remote (a fork clone), then upstream, origin, or the only remote.
 // When repository is not nil, it names the repository of a remote tea can act on, or returns ""
 // for one on another forge. Those steps then skip such remotes, and the other remotes decide when
 // they name exactly one repository; with none of them usable the choice is the name-based one.
@@ -43,19 +43,23 @@ func DiscoverRemote(ctx context.Context, runner Runner, dir, preferred string, r
 	if strings.HasPrefix(tracking, "pulls/") {
 		tracking = ""
 	}
+	names, namesErr := runner.Output(ctx, dir, false, "remote")
+	available := strings.Fields(names)
+	// In a fork clone, branches pushed to the fork track origin, but the base repository is upstream.
+	if tracking == "origin" && slices.Contains(available, "upstream") {
+		tracking = ""
+	}
 	for _, remote := range []string{pullBaseRemote(ctx, runner, dir, branch), tracking} {
 		if try(remote) {
 			return remote, nil
 		}
 	}
-	names, err := runner.Output(ctx, dir, false, "remote")
-	if err != nil {
+	if namesErr != nil {
 		if fallback != "" {
 			return fallback, nil
 		}
-		return "", err
+		return "", namesErr
 	}
-	available := strings.Fields(names)
 	for _, name := range []string{"upstream", "origin"} {
 		if slices.Contains(available, name) && try(name) {
 			return name, nil
diff --git a/internal/git/discover_test.go b/internal/git/discover_test.go
index 6a133399..c6f2f0fb 100644
--- a/internal/git/discover_test.go
+++ b/internal/git/discover_test.go
@@ -38,6 +38,8 @@ func TestDiscoverRemote(t *testing.T) {
 		{name: "recorded pull base", runner: discoverRunner{head: "main", tracking: "fork", base: "upstream", "remote": "origin\nupstream\nfork"}, want: "upstream"},
 		{name: "removed pull base", runner: discoverRunner{head: "main", tracking: "fork", base: "gone", "remote": "origin\nfork"}, want: "fork"},
 		{name: "local branch upstream", runner: discoverRunner{head: "main", tracking: ".", "remote": "origin\nfork"}, want: "origin"},
+		{name: "fork clone branch tracking origin", runner: discoverRunner{head: "main", tracking: "origin", "remote": "origin\nupstream"}, want: "upstream"},
+		{name: "branch tracking origin without upstream", runner: discoverRunner{head: "main", tracking: "origin", "remote": "origin\nfork"}, want: "origin"},
 		{name: "upstream remote", runner: discoverRunner{"remote": "origin\nupstream"}, want: "upstream"},
 		{name: "origin remote", runner: discoverRunner{"remote": "fork\norigin"}, want: "origin"},
 		{name: "sole remote", runner: discoverRunner{"remote": "fork"}, want: "fork"},