$ git clone -n https://src.fedoraproject.org/rpms/words.git /var/lib/mock/f45-build-38488-724/root/chroot_tmpdir/scmroot/words
Cloning into '/var/lib/mock/f45-build-38488-724/root/chroot_tmpdir/scmroot/words'...
$ git fetch origin a108813b7595ee025dc1a129ec32a3060bff8370:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/words
 * [new ref]         a108813b7595ee025dc1a129ec32a3060bff8370 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a108813 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild