kernel test failing in CI

... but passing when run locally.
Logs from CI:
...
DEBUG    packit.local_project:local_project.py:244 `working_dir` is set and `git_repo` is not: let's discover...
DEBUG    packit.local_project:local_project.py:247 It's a git repo!
DEBUG    packit.local_project:local_project.py:290 Parsed ref 'c8s' from the repo <git.repo.base.Repo '/tmp/pytest-of-packit/pytest-0/test_update_kernel_c8s_0/s/kernel/.git'>.
DEBUG    packit.config.package_config:package_config.py:249 Local package config found: /tmp/pytest-of-packit/pytest-0/test_update_kernel_c8s_0/s/kernel/.packit.yaml
ERROR    packit.cli.utils:utils.py:89 [Errno 2] No such file or directory: '/tmp/pytest-of-packit/pytest-0/test_update_kernel_c8s_0/s/kernel/.git/objects/30'
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/packit/cli/utils.py", line 64, in covered_func
    func(config=config, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/packit/cli/srpm.py", line 65, in srpm
    api = get_packit_api(config=config, local_project=path_or_url)
  File "/usr/local/lib/python3.6/site-packages/packit/cli/utils.py", line 121, in get_packit_api
    try_local_dir_last=True,
  File "/usr/local/lib/python3.6/site-packages/packit/config/package_config.py", line 292, in get_local_package_config
    spec_file_path=str(get_local_specfile_path(config_file_name.parent)),
  File "/usr/local/lib/python3.6/site-packages/packit/config/package_config.py", line 369, in get_local_specfile_path
    path.relative_to(dir) for path in dir.rglob("*.spec")
  File "/usr/local/lib/python3.6/site-packages/packit/config/package_config.py", line 369, in <listcomp>
    path.relative_to(dir) for path in dir.rglob("*.spec")
  File "/usr/lib64/python3.6/pathlib.py", line 1112, in rglob
    for p in selector.select_from(self):
  File "/usr/lib64/python3.6/pathlib.py", line 560, in _select_from
    for p in successor_select(starting_point, is_dir, exists, scandir):
  File "/usr/lib64/python3.6/pathlib.py", line 523, in _select_from
    entries = list(scandir(parent_path))
  File "/usr/lib64/python3.6/pathlib.py", line 387, in wrapped
    return strfunc(str(pathobj), *args)
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pytest-of-packit/pytest-0/test_update_kernel_c8s_0/s/kernel/.git/objects/30'
=============================== warnings summary ===============================
usr/lib64/python3.6/site-packages/koji/__init__.py:31
  /usr/lib64/python3.6/site-packages/koji/__init__.py:31: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
    import imp

usr/lib/python3.6/site-packages/fedora/client/bodhi.py:48
  /usr/lib/python3.6/site-packages/fedora/client/bodhi.py:48: DeprecationWarning: fedora.client.bodhi has been deprecated. Please use bodhi.client.bindings instead.
    DeprecationWarning)

-- Docs: https://docs.pytest.org/en/stable/warnings.html
=========================== short test summary info ============================
FAILED tests/test_update.py::test_update[kernel-c8s] - StopIteration
======= 1 failed, 51 passed, 1 skipped, 2 warnings in 1330.16s (0:22:10) =======
make: *** [Makefile:59: check-in-container] Error 1
packit / dist-git-to-source-git

kernel test failing in CI #159
