Buildbot uses 'git reset --hard', which will move the ref your checkout is tracking. In practice, this means we're relocating `main` onto a branch commit if we're testing a branch commit.
<rdar://problem/103121315>
Pull request: https://github.com/WebKit/WebKit/pull/7332
Committed 257570@main (ce82d432462f): <https://commits.webkit.org/257570@main> Reviewed commits have been landed. Closing PR #7332 and removing active labels.