$ git clone -n https://gitee.com/src-opencloudos-rpms/json-c.git /var/lib/mock/dist-oc9-build-70190-47404/root/chroot_tmpdir/scmroot/json-c
Cloning into '/var/lib/mock/dist-oc9-build-70190-47404/root/chroot_tmpdir/scmroot/json-c'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/json-c
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0beef63 import json-c-0.17-1.tl4