$ git clone -n https://src.fedoraproject.org/rpms/python-klein.git /var/lib/mock/f45-build-31312-651/root/chroot_tmpdir/scmroot/python-klein
Cloning into '/var/lib/mock/f45-build-31312-651/root/chroot_tmpdir/scmroot/python-klein'...
$ git fetch origin 6a5839b4e725097c1cd3898686feb87814841eac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-klein
 * [new ref]         6a5839b4e725097c1cd3898686feb87814841eac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a5839b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild