[ptest1]

Yeah so you could do a rebase and remove all of the user’s commits, but their work would likely still remain in the subsequent history- integrated as changes in some way. It would be a real mess.

[zbentley]

Users' contributions (their work) and users' personal information (their metadata) are separate in this case.

Cases where they are not separate (think digital signatures/signing keys) are a slightly more complicated question to answer.