title: git hangs on push
body: <p>I cannot push to github. I was able to push little changes, but this time, it hangs after it writes this:</p>
  
  <pre><code>git push origin master
  Counting objects: 22, done.
  Delta compression using up to 4 threads.
  Compressing objects: 100% (12/12), done.
  Writing objects: 100% (12/12), 1.51 KiB, done.
  Total 12 (delta 8), reused 0 (delta 0)
  </code></pre>
  
  <p>On my Ubuntu Process Manager, I saw that ssh hangs when I try to push something and it is: ssh git@github.com git-receive-pack 'xxx/yyy.git'</p>
  
  <p>When I try to directly run this command on my terminal, now it hangs after it writes this: </p>
  
  <pre><code>0078...7d4 refs/heads/master report-status delete-refs side-band-64k quiet ofs-delta
  0000
  </code></pre>
  
  <p>All the other thins work well, but I can't push. What could be the reason?</p>
  
  <p>Additional information: I re-created the git file and changed the remote to HTTP from SSH. Now I get this error when I try to push:</p>
  
  <pre><code>Counting objects: 17, done.
  Delta compression using up to 4 threads.
  Compressing objects: 100% (9/9), done.
  Writing objects: 100% (9/9), 1.19 KiB, done.
  Total 9 (delta 6), reused 0 (delta 0)
  error: RPC failed; result=52, HTTP code = 0
  fatal: The remote end hung up unexpectedly
  fatal: The remote end hung up unexpectedly
  Everything up-to-date
  </code></pre>
  
  <p>Extra information 2: I've been tested it for hours and it looks like my network connection is the problem. I tried to push from another connection, and it worked very well. What could be the reason behind this? The modem's firewall is disabled, by the way.</p>