$ git clone -n https://gitee.com/opencloudos-stream/libva-vdpau-driver.git /var/lib/mock/dist-oc9-epol-build-82738-57144/root/chroot_tmpdir/scmroot/libva-vdpau-driver
Cloning into '/var/lib/mock/dist-oc9-epol-build-82738-57144/root/chroot_tmpdir/scmroot/libva-vdpau-driver'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libva-vdpau-driver
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 133b8b6 package init