$ git clone -n https://gitee.com/zhang_dashuang/libfastjson.git /var/lib/mock/dist-an23-build-361191-71197/root/chroot_tmpdir/scmroot/libfastjson
Cloning into '/var/lib/mock/dist-an23-build-361191-71197/root/chroot_tmpdir/scmroot/libfastjson'...
$ git fetch origin c06dc46c768c3304e591090cb67e0ba10a915d8d:KOJI_FETCH_HEAD
From https://gitee.com/zhang_dashuang/libfastjson
 * [new ref]         c06dc46c768c3304e591090cb67e0ba10a915d8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c06dc46 New version 1.2304.0