$ git clone -n https://gitee.com/chen_yu_ao/libcxx.git /var/lib/mock/dist-an23-build-216814-62004/root/chroot_tmpdir/scmroot/libcxx
Cloning into '/var/lib/mock/dist-an23-build-216814-62004/root/chroot_tmpdir/scmroot/libcxx'...
$ git reset --hard 9b4559519a82cede1cd7fd39b4e776477784cc93
HEAD is now at 9b45595 Init package from upstream