Rebase

Moving your commits so they start from a newer point, by replaying them one at a time. The result looks as if you began today and worked in a straight line. But each replayed commit is a new commit, with a new hash.

It lets an agent's messy branch become a clean series before anyone reads it. The risk comes from the same place as the benefit: it rewrites history, so it is only safe on commits nobody else has. An agent won't know who else has them unless you say.