$ git clone -n https://src.fedoraproject.org/rpms/python-sanction.git /var/lib/mock/f45-build-32836-664/root/chroot_tmpdir/scmroot/python-sanction
Cloning into '/var/lib/mock/f45-build-32836-664/root/chroot_tmpdir/scmroot/python-sanction'...
$ git fetch origin bdc471c6e2e4cfb7b4510225dd3b46d7eb544220:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sanction
 * [new ref]         bdc471c6e2e4cfb7b4510225dd3b46d7eb544220 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdc471c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild