$ git clone -n https://gitee.com/wency_cn/libdrm_1770733896.git /var/lib/mock/dist-an23-build-513166-75099/root/chroot_tmpdir/scmroot/libdrm_1770733896
Cloning into '/var/lib/mock/dist-an23-build-513166-75099/root/chroot_tmpdir/scmroot/libdrm_1770733896'...
$ git fetch origin 478c2927b61d967281c533b562b35d36a0e275b6:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/libdrm_1770733896
 * [new ref]         478c2927b61d967281c533b562b35d36a0e275b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 478c292 Update code from upstream