Don't use the same working copy in Weblate as in update_weblate_git.py
update_weblate_git.py assumes ownership of its working copy during
some of the time it’s running. If Weblate tries to pull or commit during
that time, all kind of bad things
update_weblate_git.py could have its own working copy and
merge from the Weblate’s one before it sync’s with the canonical
(“main”) Git repo.