$ git clone -n https://src.fedoraproject.org/rpms/python-mailmanclient.git /var/lib/mock/f45-build-31363-652/root/chroot_tmpdir/scmroot/python-mailmanclient
Cloning into '/var/lib/mock/f45-build-31363-652/root/chroot_tmpdir/scmroot/python-mailmanclient'...
$ git fetch origin 1773c4254b2f9af803cecdc134e870d97ddb9e82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mailmanclient
 * [new ref]         1773c4254b2f9af803cecdc134e870d97ddb9e82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1773c42 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild