$ git clone -n https://src.fedoraproject.org/rpms/R-KEGGREST.git /var/lib/mock/f39-build-1544668-36658/root/chroot_tmpdir/scmroot/R-KEGGREST
Cloning into '/var/lib/mock/f39-build-1544668-36658/root/chroot_tmpdir/scmroot/R-KEGGREST'...
$ git fetch origin 1157bbcaac8a6d061301f10e0ff3f088fa334024:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-KEGGREST
 * [new ref]         1157bbcaac8a6d061301f10e0ff3f088fa334024 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1157bbc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild