$ git clone -n https://src.fedoraproject.org/rpms/libopm.git /var/lib/mock/f45-build-16712-490/root/chroot_tmpdir/scmroot/libopm
Cloning into '/var/lib/mock/f45-build-16712-490/root/chroot_tmpdir/scmroot/libopm'...
$ git fetch origin 5c4363af1a274a8d62476ba3deceaceae4f762c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libopm
 * [new ref]         5c4363af1a274a8d62476ba3deceaceae4f762c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c4363a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild