$ git clone -n https://gitee.com/src-opencloudos-rpms/libyang.git /var/lib/mock/dist-oc9-build-128836-77533/root/chroot_tmpdir/scmroot/libyang
Cloning into '/var/lib/mock/dist-oc9-build-128836-77533/root/chroot_tmpdir/scmroot/libyang'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libyang
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f1936d import libyang-2.1.148-1.tl4