$ git clone -n https://src.fedoraproject.org/rpms/python-multipart.git /var/lib/mock/f45-build-31640-654/root/chroot_tmpdir/scmroot/python-multipart
Cloning into '/var/lib/mock/f45-build-31640-654/root/chroot_tmpdir/scmroot/python-multipart'...
$ git fetch origin 184e5aaaeaaff0c9a28e952afee0f150f1485c75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-multipart
 * [new ref]         184e5aaaeaaff0c9a28e952afee0f150f1485c75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 184e5aa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild