$ git clone -n https://src.fedoraproject.org/rpms/fyi.git /var/lib/mock/f45-build-9382-403/root/chroot_tmpdir/scmroot/fyi
Cloning into '/var/lib/mock/f45-build-9382-403/root/chroot_tmpdir/scmroot/fyi'...
$ git fetch origin f01d319e7eabcbbac8e530b46e40be165037b2d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fyi
 * [new ref]         f01d319e7eabcbbac8e530b46e40be165037b2d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f01d319 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild