$ git clone -n https://gitee.com/wency_cn/libglvnd.git /var/lib/mock/dist-an23-build-502421-74802/root/chroot_tmpdir/scmroot/libglvnd
Cloning into '/var/lib/mock/dist-an23-build-502421-74802/root/chroot_tmpdir/scmroot/libglvnd'...
$ git fetch origin a5511f17cbbe0894453f8ebf7fb6f15b8969dded:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libglvnd
 * [new ref]         a5511f17cbbe0894453f8ebf7fb6f15b8969dded -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5511f1 Update code from upstream