For my current project my project partner requires to sync my code not only with my git-server based on gitlab, but also with his git-server (unknown base). However, I don’t want to expose all history details from former commits and name-changes to my project partner (as they’re irrelevant). I know that I can delete the entire git-history, but I’d prefer if I could keep the entire history on my server, while only exposing all future commits to the server of my project partner (and mine, as both servers will stay in sync).

Is that possible? And if yes, how can I do that?