$ git clone -n https://src.fedoraproject.org/rpms/watchman.git /var/lib/mock/f40-build-771095-125914/root/chroot_tmpdir/scmroot/watchman
Cloning into '/var/lib/mock/f40-build-771095-125914/root/chroot_tmpdir/scmroot/watchman'...
$ git fetch origin aec37af04bd5744dbb41646c9a2f17cf60c46e93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/watchman
 * [new ref]         aec37af04bd5744dbb41646c9a2f17cf60c46e93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aec37af Rebuilt for folly 2023.10.16.00