$ git clone -n https://src.fedoraproject.org/rpms/R-foghorn.git /var/lib/mock/f38-build-side-42-init-devel-769608-27754/root/chroot_tmpdir/scmroot/R-foghorn
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-769608-27754/root/chroot_tmpdir/scmroot/R-foghorn'...
$ git fetch origin a94a1017d2228e0081e6349eb69fcf02af042575:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-foghorn
 * [new ref]         a94a1017d2228e0081e6349eb69fcf02af042575 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a94a101 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild