$ git clone -n https://src.fedoraproject.org/rpms/R-rematch.git /var/lib/mock/f38-build-side-42-init-devel-903532-28616/root/chroot_tmpdir/scmroot/R-rematch
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-903532-28616/root/chroot_tmpdir/scmroot/R-rematch'...
$ git fetch origin ce390cc52cae435a9acf85d7813b5c2a92a4ff02:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-rematch
 * [new ref]         ce390cc52cae435a9acf85d7813b5c2a92a4ff02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce390cc Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild