$ git clone -n https://src.fedoraproject.org/rpms/eom.git /var/lib/mock/f45-build-8200-378/root/chroot_tmpdir/scmroot/eom
Cloning into '/var/lib/mock/f45-build-8200-378/root/chroot_tmpdir/scmroot/eom'...
$ git fetch origin 3eca8c124261735658e8dc2f7dca22ee3e648973:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eom
 * [new ref]         3eca8c124261735658e8dc2f7dca22ee3e648973 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3eca8c1 Rebuilt for libxml-2.5.4