$ git clone -n https://src.fedoraproject.org/rpms/kgpg.git /var/lib/mock/f42-build-864319-172280/root/chroot_tmpdir/scmroot/kgpg
Cloning into '/var/lib/mock/f42-build-864319-172280/root/chroot_tmpdir/scmroot/kgpg'...
$ git fetch origin 302f036d7bab893400c776c22b96ba9f9256ade7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgpg
 * [new ref]         302f036d7bab893400c776c22b96ba9f9256ade7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 302f036 24.12.0