$ git clone -n https://gitee.com/src-opencloudos-rpms/libyang.git /var/lib/mock/dist-oc8-build-241690-82874/root/chroot_tmpdir/scmroot/libyang
Cloning into '/var/lib/mock/dist-oc8-build-241690-82874/root/chroot_tmpdir/scmroot/libyang'...
$ git fetch origin fd84550103532908d3049cec2cca804b3549d6a1:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libyang
 * [new ref]         fd84550103532908d3049cec2cca804b3549d6a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd84550 import libyang-1.0.184-2.tl3