It's more useful to fix the problem before it happens. Try to set up systems or workflows that make it easy to do the right thing, rather than trying to fix it afterwards.
I really had to converse with the lead in this wise:
If I stapled your HR record, including your bank account and routing number, to our shared refrigerator so I could remember it, would you think that appropriate?
Really, this was the context of our meeting.
Now I am left with the aftermath of his departure, and knives at my sides.
If there is some foolishness, git propagates it EVERYWHERE.
Every git repository is equal. I have no control of proliferation.
Sigh.