Cleans and resets a git repo and its submodules

repo-rinse.sh

git clean -xfd
git submodule foreach --recursive git clean -xfd
git reset --hard
git submodule foreach --recursive git reset --hard
git submodule update --init --recursive

git restore . --recurse-submodules

It resets the submodules back

Does it also take care of the git reset --hard --recurse-submodules to discard any changes in the working trees? If so, why do the git restore last and not first?

The key for me was git submodule sync. Thank you @larsbrinkhoff @yuzhichang!

It's a sneaky issue whenever the URLs specified in .gitmodules get updated, but the old URLs continue to silently be used (as shown by git submodule foreach --recursive git remote get-url origin). Git should honestly warn us whenever the two are different.