diff --git a/routers/hat/repo/branch.go b/routers/hat/repo/branch.go
index 794386b..ad8e67f 100644
--- a/routers/hat/repo/branch.go
+++ b/routers/hat/repo/branch.go
@@ -58,13 +58,13 @@ func ListBranches(ctx *context.APIContext) {
 			ctx.Error(http.StatusInternalServerError, "CountBranches", err)
 			return
 		}
-		// if totalNumOfBranches == 0 { // sync branches immediately because non-empty repository should have at least 1 branch
-		// 	totalNumOfBranches, err = repo_module.SyncRepoBranches(ctx, ctx.Repo.Repository.ID, 0)
-		// 	if err != nil {
-		// 		ctx.ServerError("SyncRepoBranches", err)
-		// 		return
-		// 	}
-		// }
+		if totalNumOfBranches == 0 { // sync branches immediately because non-empty repository should have at least 1 branch
+			_, err = repo_module.SyncRepoBranches(ctx, ctx.Repo.Repository.ID, 0)
+			if err != nil {
+				ctx.ServerError("SyncRepoBranches", err)
+				return
+			}
+		}
 
 		rules, err := git_model.FindRepoProtectedBranchRules(ctx, ctx.Repo.Repository.ID)
 		if err != nil {