title: Proxy connect aborted while accessing git
body: <p>I'm trying to clone the following repo using command :
  git clone <a href="https://github.com/laravel/laravel.git" rel="nofollow">https://github.com/laravel/laravel.git</a></p>
  
  <p>And I'm getting following error:</p>
  
  <pre><code>Cloning into 'laravel'...
  error: Proxy CONNECT aborted while accessing https://github.com/laravel/laravel.git/info/refs?service=git-upload-pack
  fatal: HTTP request failed
  </code></pre>
  
  <p>What is going wrong ?</p>