title: Can't push to github through proxy
body: <p>Please help, I'm trying to push to github from my workplace...
  I've tried this:</p>
  
  <pre><code>myuser@somewhere /c/sites/mrquery (master)
  $ git remote add origin ssh://git@github.com:breienr/mrquery.git
  
  myuser@somewhere /c/sites/mrquery (master)
  $ git http-push origin master
  error: Cannot access URL origin/, return code 22
  
  myuser@somewhere /c/sites/mrquery (master)
  $ git config --get http.proxy
  proxy:8080
  </code></pre>
  
  <p>but i still get "error: Cannot access URL origin/, return code 22"</p>