installation fails in ipv6-only environment

[rifler]

github.com has no ipv6 address

host github.com

github.com has address 140.82.121.3
github.com mail is handled by 5 alt2.aspmx.l.google.com.
github.com mail is handled by 1 aspmx.l.google.com.
github.com mail is handled by 10 alt3.aspmx.l.google.com.
github.com mail is handled by 10 alt4.aspmx.l.google.com.
github.com mail is handled by 5 alt1.aspmx.l.google.com.

So when you try to install llnode, it fails

fatal: unable to access 'https://github.com/llvm-mirror/lldb.git/': Couldn't connect to server
child_process.js:656
    throw err;
    ^

Error: Command failed: git clone --depth 1 --branch release_60 https://github.com/llvm-mirror/lldb.git /node_modules/llnode/lldb-6.0

https://github.com/nodejs/llnode/blob/4b868f707670ecc50cbb43459130640a02707815/scripts/lldb.js#L48

Is there any way not to use github.com while installing?