I think I am really confused, should be @tree_edit_project

Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7237#note_20571990

app/controllers/concerns/creates_commit.rb

@@ -13,7 +13,7 @@ module CreatesCommit
     )
 
     result = service.new(
-      @mr_target_project, current_user, commit_params).execute
+      @tree_edit_project, current_user, commit_params).execute
 
     if result[:status] == :success
       update_flash_notice(success_notice)