$ git clone -n https://src.fedoraproject.org/rpms/tachyon.git /var/lib/mock/f38-build-side-42-init-devel-574317-25994/root/chroot_tmpdir/scmroot/tachyon
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-574317-25994/root/chroot_tmpdir/scmroot/tachyon'...
$ git fetch origin c1e327bffe9adfa40340f12749cd4416a2390556:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tachyon
 * [new ref]         c1e327bffe9adfa40340f12749cd4416a2390556 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1e327b Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild