$ git clone -n https://src.fedoraproject.org/rpms/golang-github-cheekybits-genny.git /var/lib/mock/f38-build-side-42-init-devel-1018242-29604/root/chroot_tmpdir/scmroot/golang-github-cheekybits-genny
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1018242-29604/root/chroot_tmpdir/scmroot/golang-github-cheekybits-genny'...
$ git fetch origin c150d05d9610c395817dcd51f020b2226b927fe0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-cheekybits-genny
 * [new ref]         c150d05d9610c395817dcd51f020b2226b927fe0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c150d05 Retired: Long term failure to build