$ git clone -n https://src.fedoraproject.org/rpms/R-cellranger.git /var/lib/mock/f38-build-side-42-init-devel-870099-28441/root/chroot_tmpdir/scmroot/R-cellranger
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-870099-28441/root/chroot_tmpdir/scmroot/R-cellranger'...
$ git fetch origin 6f39e3825cb396a730ee094e15d3a274b19dd291:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-cellranger
 * [new ref]         6f39e3825cb396a730ee094e15d3a274b19dd291 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f39e38 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild