Support for pre-rebase Hook

[BrutalSimplicity]

Is there a pre-commit hook that can prevent rebase operations? It looks like git does support a pre-rebase hook, but I didn't see it in the docs.

I checked here.

Example pre-rebase hook:

https://gist.github.com/uasi/9384329

[asottile]

here's some PRs you can draw inspiration from -- #2036 #1800

[BrutalSimplicity]

Never mind, I think I'm actually looking for the standard commit hook functionality. I want to be able to prevent certain commits from being rewritten, which I think that hook can do. Apologies. 😅

I'll still leave this open, since it is functionality that doesn't exist.

[BrutalSimplicity]

@asottile I appreciate the quick response. Thank you! Not sure if I'll have time soon to add this, but when I have more time, I'll try to take a look if this is still open.

[asottile]

if you're trying to hook into individual "commits" that (for example) an interactive rebase makes unfortunately I don't think there's a way to do that (git rebase --continue skips hooks in my experience)

[asottile]

(that is, unless you manually call git commit with no arguments before continuing)

[BrutalSimplicity]

Ahh, thanks for letting me know that. I guess server-side hooks are the way here. Any ideas on how you can implement a server-side hook that will reject a push if a "protected" commit message is modified?

I don't think there is support in git for this concept, but some tools like to use git as a more traditional datastore, and if a certain commit is altered, the tools end up in an odd state.

As I was typing this it dawned on me that this could possibly be handled by a tagging strategy.

[adamchainz]

I just blogged about a solution to run hooks during rebase:

$ git rebase -x 'pre-commit run --from-ref HEAD~ --to-ref HEAD' main