$ git clone -n https://src.fedoraproject.org/rpms/python-howdoi.git /var/lib/mock/f45-build-30964-648/root/chroot_tmpdir/scmroot/python-howdoi
Cloning into '/var/lib/mock/f45-build-30964-648/root/chroot_tmpdir/scmroot/python-howdoi'...
$ git fetch origin 0e1e88f84cfaf9bbff48e55abeed3b5b1b913fac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-howdoi
 * [new ref]         0e1e88f84cfaf9bbff48e55abeed3b5b1b913fac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e1e88f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild