Things like GitHub's Secret Scanning will still be there to check...

And if a secret ends up on your personal branch, you can delete the Save or Checkpoint or Commit and it'll disappear; no "rewrite history". Deleting versions is a native, expected use case in Grace.

Git not being able to delete versions is a problem that's so bad that we've had to build massive systems (i.e. Secret Scanning) as a workaround. Grace, being built now, takes it for granted that versions need to disappear sometimes.

In Grace, saves and checkpoints and, like Git, branches themselves, are ephemeral, they're meant to be created and deleted. Saves and checkpoints will be deleted automatically, with repo-level timeout settings.