Sometimes you are behind a http proxy, and the git:// protocol is not accessible.
For instance on erlang rebar, all developers prefer the git:// protocol when listing dependency.
But how to fix it if you are behind a http proxy?
Ask help to git…
[bash]
git config –global url.https://github.com/.insteadOf git://github.com/
[/bash]
Credits: http://erlang.org/pipermail/erlang-questions/2014-March/078402.html