setuptools_scm: Version file is not generated since version 8 on CI without any error

Since setuptools_scm release 8 I have observed a test crash because the version file is not generated.

   /tmp/tox/py311-PyQt5-all/lib/python3.11/site-packages/PartSeg/__init__.py:4: in <module>
      from PartSeg.version import version
  E   ModuleNotFoundError: No module named 'PartSeg.version'

When it is configured in pyproject.toml: https://github.com/4DNucleome/PartSeg/blob/bcaf0aad2e80edbf25e42859f8a0722074f0c68b/pyproject.toml#L1-L7

But when I pin setuptools_scm below 8 all problems disappear.

Here is log with SETUPTOOLS_SCM_DEBUG set to 1. https://github.com/4DNucleome/PartSeg/actions/runs/6273817081/job/17038040421?pr=1020

I cannot reproduce it locally. I do not have any idea how to debug this.