$ git clone -n https://src.fedoraproject.org/rpms/ren.git /var/lib/mock/f38-build-side-42-init-devel-620645-26340/root/chroot_tmpdir/scmroot/ren
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-620645-26340/root/chroot_tmpdir/scmroot/ren'...
$ git fetch origin cdd67f9ad3acace7be0c3522f6bf01cac3088d5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ren
 * [new ref]         cdd67f9ad3acace7be0c3522f6bf01cac3088d5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cdd67f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild