fix showing pull request link when delete a branch (#5166)

diff --git a/cmd/hook.go b/cmd/hook.go
index 70849f5142c8e7b9c33f6cb089175fb9fc395918..27500f9c666d0daba21c8bcf4cef9bf46e389b85 100644 (file)
--- a/cmd/hook.go
+++ b/cmd/hook.go
@@ -214,7 +214,7 @@ func runHookPostReceive(c *cli.Context) error {
                        log.GitLogger.Error(2, "Update: %v", err)
                }
 
-               if strings.HasPrefix(refFullName, git.BranchPrefix) {
+               if newCommitID != git.EmptySHA && strings.HasPrefix(refFullName, git.BranchPrefix) {
                        branch := strings.TrimPrefix(refFullName, git.BranchPrefix)
                        repo, pullRequestAllowed, err := private.GetRepository(repoID)
                        if err != nil {