$ git clone -n https://src.fedoraproject.org/rpms/spooky-c.git /var/lib/mock/f40-build-791636-137676/root/chroot_tmpdir/scmroot/spooky-c
Cloning into '/var/lib/mock/f40-build-791636-137676/root/chroot_tmpdir/scmroot/spooky-c'...
$ git fetch origin b5f901e891624bd98e4a4e0a75efa720ad73486c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/spooky-c
 * [new ref]         b5f901e891624bd98e4a4e0a75efa720ad73486c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5f901e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild