$ git clone -n https://gitee.com/opencloudos-stream/cjson.git /var/lib/mock/dist-oc9-epol-build-119750-70813/root/chroot_tmpdir/scmroot/cjson
Cloning into '/var/lib/mock/dist-oc9-epol-build-119750-70813/root/chroot_tmpdir/scmroot/cjson'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/cjson
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6cd1232 Rebuilt for loongarch release