$ git clone -n https://gitee.com/wency_cn/libdv.git /var/lib/mock/dist-an23-build-502307-74802/root/chroot_tmpdir/scmroot/libdv
Cloning into '/var/lib/mock/dist-an23-build-502307-74802/root/chroot_tmpdir/scmroot/libdv'...
$ git fetch origin 4c99fdd8d0674ca7d0d1b66c899f4eea0888443d:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libdv
 * [new ref]         4c99fdd8d0674ca7d0d1b66c899f4eea0888443d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c99fdd Update code from upstream