Let user pick base branch during /review

What feature would you like to see?

I use a git fetch-rebase/reset workflow. Typically on a feature branch, I will run the following

git fetch origin
git rebase -i origin/master

what this means is that a lot of time, my remote-tracking origin/master branch is more up-to-date than my local master branch. For this reason, I often rebase on origin/master instead of master.

When codex runs /review after my feature branch is rebased onto origin/master, I am only given the option to diff against master, which is out-of-date. This means that the diff result would include changes between master..origin/master, which I don't want to include in the review.

Currently, the workaround is for me to also update the local master branch before running review

git checkout master
git reset --hard origin/master
git checkout -

I would prefer it if I could manually type in the exact ref/commit for /review to diff against.

Are you interested in implementing this feature?

Sure. I think we can run git for-each-ref instead of git branch to get the list of available refs. That way, other users may diff against release tags to get a pre-release review.

Additional information

_No response_