Move some functions to gitrepo package (#35543)

Refactor Git command functions to use WithXXX methods instead of
exposing RunOpts.
This change simplifies reuse across gitrepo and improves consistency,
encapsulation, and maintainability of command options.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/git/repo_ref_nogogit.go

@@ -23,11 +23,11 @@ func (repo *Repository) GetRefsFiltered(pattern string) ([]*Reference, error) {
 
 	go func() {
 		stderrBuilder := &strings.Builder{}
-		err := gitcmd.NewCommand("for-each-ref").Run(repo.Ctx, &gitcmd.RunOpts{
-			Dir:    repo.Path,
-			Stdout: stdoutWriter,
-			Stderr: stderrBuilder,
-		})
+		err := gitcmd.NewCommand("for-each-ref").
+			WithDir(repo.Path).
+			WithStdout(stdoutWriter).
+			WithStderr(stderrBuilder).
+			Run(repo.Ctx)
 		if err != nil {
 			_ = stdoutWriter.CloseWithError(gitcmd.ConcatenateError(err, stderrBuilder.String()))
 		} else {