'error: unknown option `cached'

[TowerBR]

Hi

I'm running synctogit in a Ubuntu 22.04.4 machine, with git version 2.34.1.

Whem I call synctogit manually from terminal prompt it runs smoothly, but whem I call it from a bash script triggered by cron, I get:

Traceback (most recent call last):
  File "/usr/local/bin/synctogit", line 11, in <module>
    load_entry_point('synctogit==2.0.1', 'console_scripts', 'synctogit')()
  File "/usr/local/lib/python2.7/dist-packages/synctogit/main.py", line 35, in main
    run(pargs)
  File "/usr/local/lib/python2.7/dist-packages/synctogit/main.py", line 49, in run
    while _sync(git, evernote, config, pargs):
  File "/usr/local/lib/python2.7/dist-packages/synctogit/main.py", line 78, in _sync
    with git.transaction() as t:
  File "/usr/local/lib/python2.7/dist-packages/synctogit/GitTransaction.py", line 186, in __enter__
    self._check_repo_state()
  File "/usr/local/lib/python2.7/dist-packages/synctogit/GitTransaction.py", line 157, in _check_repo_state
    self._stash()
  File "/usr/local/lib/python2.7/dist-packages/synctogit/GitTransaction.py", line 151, in _stash
    if self.git.is_dirty(untracked_files=True):
  File "/usr/local/lib/python2.7/dist-packages/git/repo/base.py", line 608, in is_dirty
    len(self.git.diff('--cached', *default_args)):
  File "/usr/local/lib/python2.7/dist-packages/git/cmd.py", line 466, in <lambda>
    return lambda *args, **kwargs: self._call_process(name, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/git/cmd.py", line 934, in _call_process
    return self.execute(make_call(), **_kwargs)
  File "/usr/local/lib/python2.7/dist-packages/git/cmd.py", line 718, in execute
    raise GitCommandError(command, status, stderr_value)
git.exc.GitCommandError: 'git diff --cached --abbrev=40 --full-index --raw' returned with exit code 129
stderr: 'error: unknown option `cached'
usage: git diff --no-index [<options>] <path> <path>

Which seens related to

def _stash(self):
    if self.git.is_dirty(untracked_files=True):
        self.git.stash('push', '-m', self._get_commit_message())

in GitTransaction.py

Is my perception correct? Do I need to adjust any settings?