1 files changed, 9 insertions, 0 deletions

diff --git a/services/pull/update.go b/services/pull/update.go
index f35e47cbf8..c2c13845e3 100644
--- a/services/pull/update.go
+++ b/services/pull/update.go
@@ -22,6 +22,11 @@ func Update(pull *models.PullRequest, doer *models.User, message string) error {
 		BaseBranch: pull.HeadBranch,
 	}
 
+	if pull.Flow == models.PullRequestFlowAGit {
+		// TODO: Not support update agit flow pull request's head branch
+		return fmt.Errorf("Not support update agit flow pull request's head branch")
+	}
+
 	if err := pr.LoadHeadRepo(); err != nil {
 		log.Error("LoadHeadRepo: %v", err)
 		return fmt.Errorf("LoadHeadRepo: %v", err)
@@ -48,6 +53,10 @@ func Update(pull *models.PullRequest, doer *models.User, message string) error {
 
 // IsUserAllowedToUpdate check if user is allowed to update PR with given permissions and branch protections
 func IsUserAllowedToUpdate(pull *models.PullRequest, user *models.User) (bool, error) {
+	if pull.Flow == models.PullRequestFlowAGit {
+		return false, nil
+	}
+
 	if user == nil {
 		return false, nil
 	}