$ git clone -n https://gitee.com/wenyuzifang/libvpx.git /var/lib/mock/dist-an23-build-462666-73799/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/dist-an23-build-462666-73799/root/chroot_tmpdir/scmroot/libvpx'...
$ git fetch origin da96be5edd76042951b048e540b1a581ff00840d:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libvpx
 * [new ref]         da96be5edd76042951b048e540b1a581ff00840d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da96be5 Update code from upstream