Fix bug

Author: lunny

modules/gitrepo/branch.go

@@ -29,14 +29,15 @@ func GetBranchCommitID(ctx context.Context, repo Repository, branch string) (str
 		return "", err
 	}
 	defer gitRepo.Close()
-	return gitRepo.GetRefCommitID(branch)
+	return gitRepo.GetRefCommitID(git.BranchPrefix + branch)
 }
 
 // SetDefaultBranch sets default branch of repository.
 func SetDefaultBranch(ctx context.Context, repo Repository, name string) error {
 	cmd := git.NewCommand(ctx, "symbolic-ref", "HEAD").
 		AddDynamicArguments(git.BranchPrefix + name)
-	return RunGitCmd(ctx, repo, cmd, &git.RunOpts{})
+	_, _, err := RunGitCmdStdString(ctx, repo, cmd, &git.RunOpts{})
+	return err
 }
 
 // GetDefaultBranch gets default branch of repository.

modules/gitrepo/gitrepo.go

@@ -6,6 +6,7 @@ package gitrepo
 import (
 	"context"
 	"io"
+	"path/filepath"
 	"strings"
 
 	"code.gitea.io/gitea/modules/git"
@@ -48,7 +49,8 @@ func repositoryFromContext(ctx context.Context, repo Repository) *git.Repository
 	}
 
 	if gitRepo, ok := value.(*git.Repository); ok && gitRepo != nil {
-		if strings.HasSuffix(gitRepo.Path, repoRelativePath(repo)) {
+		relativePath := filepath.Join(strings.ToLower(repo.GetOwnerName()), strings.ToLower(repo.GetName()))
+		if strings.HasSuffix(gitRepo.Path, relativePath) {
 			return gitRepo
 		}
 	}