$ git clone -n https://gitee.com/src-opencloudos-rpms/libdvdnav.git /var/lib/mock/dist-oc9-build-42114-14591/root/chroot_tmpdir/scmroot/libdvdnav
Cloning into '/var/lib/mock/dist-oc9-build-42114-14591/root/chroot_tmpdir/scmroot/libdvdnav'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libdvdnav
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 157a0c8 import libdvdnav-6.1.1-3.tl4