$ git clone -n https://gitee.com/opencloudos-stream/gcc.git /var/lib/mock/dist-ocs23-build-22353-1062/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/dist-ocs23-build-22353-1062/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/gcc
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 033500f !2 移除update-tgcc.sh Merge pull request !2 from nilusyi/master