Sandcastle for non-git upstreams: TypeError: __init__() got an unexpected keyword argument 'working_dir'

[sentry-io]

Sentry Issue: PCKT-002-PACKIT-SERVICE-8AE

TypeError: __init__() got an unexpected keyword argument 'working_dir'
  File "packit_service/worker/handlers/distgit.py", line 376, in run_for_target
    downstream_pr = self.sync_branch(
  File "packit_service/worker/handlers/distgit.py", line 268, in sync_branch
    downstream_pr = self.packit_api.sync_release(**kwargs)
  File "packit/api.py", line 1082, in sync_release
    self.up.actions_handler.run_action(
  File "packit/upstream.py", line 112, in actions_handler
    self.command_handler,
  File "packit/upstream.py", line 388, in command_handler
    self._command_handler = self.handler_kls(