$ git clone -n https://gitee.com/wenyuzifang/libdrm.git /var/lib/mock/dist-an23-build-469278-74027/root/chroot_tmpdir/scmroot/libdrm
Cloning into '/var/lib/mock/dist-an23-build-469278-74027/root/chroot_tmpdir/scmroot/libdrm'...
$ git fetch origin cfee8ea7f35af7aede6c8b75695dfdbac8b135c6:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libdrm
 * [new ref]         cfee8ea7f35af7aede6c8b75695dfdbac8b135c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfee8ea Update code from upstream