Fix git error handling (#32401)

services/repository/push.go

@@ -183,9 +183,7 @@ func pushUpdates(optsList []*repo_module.PushUpdateOptions) error {
 						repo.IsEmpty = false
 						if repo.DefaultBranch != setting.Repository.DefaultBranch {
 							if err := gitrepo.SetDefaultBranch(ctx, repo, repo.DefaultBranch); err != nil {
-								if !git.IsErrUnsupportedVersion(err) {
-									return err
-								}
+								return err
 							}
 						}
 						// Update the is empty and default_branch columns