$ git clone -n https://src.fedoraproject.org/rpms/python-mongomock.git /var/lib/mock/f45-build-31598-654/root/chroot_tmpdir/scmroot/python-mongomock
Cloning into '/var/lib/mock/f45-build-31598-654/root/chroot_tmpdir/scmroot/python-mongomock'...
$ git fetch origin f98800222259d536d85bb9bd4f8814752ce612cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mongomock
 * [new ref]         f98800222259d536d85bb9bd4f8814752ce612cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f988002 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild