I think you misread the parent comment. They didn't say "committed my work credentials", it was "committed with my work credentials". As in they have two differ

I think you misread the parent comment. They didn't say "committed my work credentials", it was "committed with my work credentials". As in they have two different identities and used the wrong one when committing a change, so the commit author was incorrect. Being able to set configs per directory provides a workaround.