Make sure we have the branch on the other project

1 files changed, 9 insertions, 1 deletions

diff --git a/app/services/files/base_service.rb b/app/services/files/base_service.rb
index 6779bd2818a..fd62246eddb 100644
--- a/app/services/files/base_service.rb
+++ b/app/services/files/base_service.rb
@@ -23,7 +23,7 @@ module Files
       validate
 
       # Create new branch if it different from source_branch
-      validate_target_branch if different_branch?
+      ensure_target_branch if different_branch?
 
       result = commit
       if result
@@ -71,6 +71,14 @@ module Files
       end
     end
 
+    def ensure_target_branch
+      validate_target_branch
+
+      if @source_project != project
+        @project.fetch_ref(@source_project, @target_branch, @source_branch)
+      end
+    end
+
     def validate_target_branch
       result = ValidateNewBranchService.new(project, current_user).
         execute(@target_branch)