$ git clone -n https://src.fedoraproject.org/rpms/festival.git /var/lib/mock/f45-build-9849-409/root/chroot_tmpdir/scmroot/festival
Cloning into '/var/lib/mock/f45-build-9849-409/root/chroot_tmpdir/scmroot/festival'...
$ git fetch origin c48ebf30b1a56789c5079db5c426de9f1ca16d5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/festival
 * [new ref]         c48ebf30b1a56789c5079db5c426de9f1ca16d5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c48ebf3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild