@dsfgs in theory you can rewrite git history, so you could do a tool to rewrite timestamps, too. Imagine a team that also maintains truly anonymous ids, too. I had thought about how to do a true and purely anonymous git team when I originally had considered secretly restarting my secure communications work at the end of last decade, but I didn't do so at the time. Instead I did stuff that I knew would draw little interest from the 3 letter agency and sv crowd but can fit other human needs.