$ git clone -n https://gitee.com/src-opencloudos-rpms/libvpx.git /var/lib/mock/dist-oc9-build-42695-14591/root/chroot_tmpdir/scmroot/libvpx
Cloning into '/var/lib/mock/dist-oc9-build-42695-14591/root/chroot_tmpdir/scmroot/libvpx'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libvpx
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0dd60ff import libvpx-1.12.0-3.tl4