Depends what the git history is supposed to show. Personally, I prefer people to leave their mistakes and reversions - though I'd require more description messages than "oops" or "fix", something that explained why it was being reverted or swapped out would be the minimum.

Sometimes you try things one way and they don't work out, so you go in a different direction. Capturing why this happened and when can go a long way towards explaining downstream decisions that might seem confusing to someone with a fresh perspective.