$ git clone -n https://src.fedoraproject.org/rpms/json_simple.git /var/lib/mock/f38-build-side-42-init-devel-668539-26656/root/chroot_tmpdir/scmroot/json_simple
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-668539-26656/root/chroot_tmpdir/scmroot/json_simple'...
$ git fetch origin d04f41357dfc0378e734e10aecee93e9a1bcbbca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/json_simple
 * [new ref]         d04f41357dfc0378e734e10aecee93e9a1bcbbca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d04f413 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild