$ git clone -n https://src.fedoraproject.org/rpms/python-hupper.git /var/lib/mock/f45-build-31043-649/root/chroot_tmpdir/scmroot/python-hupper
Cloning into '/var/lib/mock/f45-build-31043-649/root/chroot_tmpdir/scmroot/python-hupper'...
$ git fetch origin 3d83e04e3e6ab8c768b1be78acd3e159aec23124:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-hupper
 * [new ref]         3d83e04e3e6ab8c768b1be78acd3e159aec23124 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d83e04 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild