$ git clone -n https://gitee.com/chen_yu_ao/libcxx.git /var/lib/mock/dist-an23-build-217689-62020/root/chroot_tmpdir/scmroot/libcxx
Cloning into '/var/lib/mock/dist-an23-build-217689-62020/root/chroot_tmpdir/scmroot/libcxx'...
$ git reset --hard f11eb38f860e9971c4899e8990618b8d77a5cf5f
HEAD is now at f11eb38 Init package from upstream