$ git clone -n https://gitee.com/lizhao2025/clang.git /var/lib/mock/dist-an23-build-496258-74608/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23-build-496258-74608/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin 282a113b69e7a8d6ab94102f93fa397cf50741dd:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/clang
 * [new ref]         282a113b69e7a8d6ab94102f93fa397cf50741dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 282a113 Update code from upstream