Just to clarify (and we do say this when you run `but setup`), the `pre-commit` hook is needed because of the way that we manage commits - we allow for multiple parallel applied branches, which Git cannot do. The way we accomplish this is to maintain a hidden 'megamerge' commit (as JJ would say). All Git commands work fine the way we're doing it except 'git commit', which is not aware of our operating model and will commit on top of our megamerge, which is problematic. So we install pre-commit to protect against getting yourself in a poor situation by using both Git and GitButler interchangeably.

It's not difficult to "escape" - using `git checkout` will tear everything down properly - that's the only task of the `post-checkout` - to determine that you want to go back to using vanilla git commit tooling and remove our shims.

We also don't have a prepare-commit-msg hook - our commit tooling will inject an extra Change-Id header (of the same format and interchangeable with Jujutsu) but that affects nothing that vanilla git cares about.