$ git clone -n https://src.fedoraproject.org/rpms/headscale.git /var/lib/mock/f45-build-13384-450/root/chroot_tmpdir/scmroot/headscale
Cloning into '/var/lib/mock/f45-build-13384-450/root/chroot_tmpdir/scmroot/headscale'...
$ git fetch origin bb04411badab544a3d7ac5143c286659ce3227d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/headscale
 * [new ref]         bb04411badab544a3d7ac5143c286659ce3227d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bb04411 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild