GitHub can ban your account if you violated their TOS, but I don't think they can/will ban the repo if one of the contributor might be questionable, you can fak

GitHub can ban your account if you violated their TOS, but I don't think they can/will ban the repo if one of the contributor might be questionable, you can fake commit history anyway. Perhaps they may ask the contributors to change git history if the contributor for a commit is really freaking them out for some reason? I have no idea.