title: git push behind proxy with ssl interception
body: <p>My git client is behind a company proxy. That proxy makes ssl interception.</p>
  
  <p>I managed to suppress the SSL Certificate Problems with <code>git config --global http.sslcainfo PATH-TO-PROXY-CA-CERT</code> </p>
  
  <p>Now I can clone repositories from github/bitbucket/gitlab/... over https (ssh is blocked)</p>
  
  <p>But whenever I have to authenticate (e.g. for private repos or to push something) I get the message <code>fatal: Authentication failed for ...</code> sometimes also</p>
  
  <pre><code>remote: Anonymous access to ... denied.
  fatal: Authentication failed for '...'
  </code></pre>
  
  <p>Why do I get these errors and what can I do to make it work?</p>