GH Actions bug about kneed

[Shotgunosine]

So I think this is because the action is creating a temporary merge commit and checking that out:
actions/checkout#426. Commit 525bbb isn't in the main repo's git log, or in the PR's git log. It's a new commit simulating the results of merging the PR.

Line 48 here hints at this:
https://github.com/arvkevi/kneed/actions/runs/4829749517/jobs/8605149399#step:2:53
"/usr/local/bin/git -c protocol.version=2 fetch --no-tags --prune --progress --no-recurse-submodules --depth=1 origin +c525bbbe8cd6a78a66be1535c031c05d8ad9a321:refs/remotes/pull/147/merge"