$ git clone -n https://gitee.com/sys0613/libvpx.git /var/lib/mock/dist-an7_9-updates-build-309043-65941/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/dist-an7_9-updates-build-309043-65941/root/chroot_tmpdir/scmroot/libvpx'...
$ git fetch origin 33d47e1d4e8cbc7c562c0be49f4482858ee88eb3:KOJI_FETCH_HEAD
From https://gitee.com/sys0613/libvpx
 * [new ref]         33d47e1d4e8cbc7c562c0be49f4482858ee88eb3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33d47e1 add doc sub package