$ git clone -n https://src.fedoraproject.org/rpms/python-yamlloader.git /var/lib/mock/f45-build-33738-674/root/chroot_tmpdir/scmroot/python-yamlloader
Cloning into '/var/lib/mock/f45-build-33738-674/root/chroot_tmpdir/scmroot/python-yamlloader'...
$ git fetch origin a0380f9d858e7d7542d75580aeefcc74cedd0ef6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-yamlloader
 * [new ref]         a0380f9d858e7d7542d75580aeefcc74cedd0ef6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0380f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild