$ git clone -n https://src.fedoraproject.org/rpms/R-here.git /var/lib/mock/f38-build-side-42-init-devel-1035814-29746/root/chroot_tmpdir/scmroot/R-here
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1035814-29746/root/chroot_tmpdir/scmroot/R-here'...
$ git fetch origin e37bdd54216646c65c8ef9add22a7f552c3bc126:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-here
 * [new ref]         e37bdd54216646c65c8ef9add22a7f552c3bc126 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e37bdd5 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild