Restore method temporarily

ee/app/models/ee/repository.rb

@@ -35,5 +35,12 @@ module EE
       # Gitaly migration: https://gitlab.com/gitlab-org/gitaly/issues/1243
       ::Gitlab::GitalyClient::StorageSettings.allow_disk_access { super }
     end
+
+    # Gitaly migration: https://gitlab.com/gitlab-org/gitaly/issues/1246
+    def update_branch(user, branch_name, newrev, oldrev)
+      ::Gitlab::GitalyClient::StorageSettings.allow_disk_access do
+        ::Gitlab::Git::OperationService.new(user, raw_repository).update_branch(branch_name, newrev, oldrev)
+      end
+    end
   end
 end