$ git clone -n https://src.fedoraproject.org/rpms/python-fedora-sig-onboard.git /var/lib/mock/f45-build-30678-647/root/chroot_tmpdir/scmroot/python-fedora-sig-onboard
Cloning into '/var/lib/mock/f45-build-30678-647/root/chroot_tmpdir/scmroot/python-fedora-sig-onboard'...
$ git fetch origin 3fea4454ea446337a565ce29f2c8248ec4e0befd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fedora-sig-onboard
 * [new ref]         3fea4454ea446337a565ce29f2c8248ec4e0befd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3fea445 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild