Spec failure in `spec/lib/gitlab/git/repository_spec.rb` | Gitlab::Git::Repository#merge can perform a merge

Trace

Failures:
  1) Gitlab::Git::Repository#merge can perform a merge
     Failure/Error: raise Gitlab::Git::CommandError.new(e)
     Gitlab::Git::CommandError:
       13:error when running creating new updater: rpc error: code = NotFound desc = GetRepoPath: not a git repository: "/builds/gitlab-org/gitlab/tmp/tests/repositories/mutable-repo.git".
     # ./lib/gitlab/git/wraps_gitaly_errors.rb:15:in `rescue in wrapped_gitaly_errors'
     # ./lib/gitlab/git/wraps_gitaly_errors.rb:6:in `wrapped_gitaly_errors'
     # ./lib/gitlab/git/repository.rb:783:in `write_ref'
     # ./lib/gitlab/git/repository.rb:687:in `create_branch'
     # ./spec/lib/gitlab/git/repository_spec.rb:1745:in `block (3 levels) in <top (required)>'
     # ./spec/spec_helper.rb:354:in `block (3 levels) in <top (required)>'
     # ./spec/support/sidekiq_middleware.rb:9:in `with_sidekiq_server_middleware'
     # ./spec/spec_helper.rb:345:in `block (2 levels) in <top (required)>'
     # ./spec/spec_helper.rb:341:in `block (3 levels) in <top (required)>'
     # ./spec/spec_helper.rb:341:in `block (2 levels) in <top (required)>'
     # ------------------
     # --- Caused by: ---
     # GRPC::Internal:
     #   13:error when running creating new updater: rpc error: code = NotFound desc = GetRepoPath: not a git repository: "/builds/gitlab-org/gitlab/tmp/tests/repositories/mutable-repo.git". debug_error_string:{"created":"@1609810199.607415190","description":"Error received from peer unix:tmp/tests/gitaly/praefect.socket","file":"src/core/lib/surface/call.cc","file_line":1055,"grpc_message":"error when running creating new updater: rpc error: code = NotFound desc = GetRepoPath: not a git repository: "/builds/gitlab-org/gitlab/tmp/tests/repositories/mutable-repo.git"","grpc_status":13}
     #   ./lib/gitlab/gitaly_client.rb:177:in `execute'