title: git pull - fatal: The remote end hung up unexpectedly
body: <p>I did a "git checkout -b BranchName SHA1", where I used SHA1 of an old commit.
  After that, I tried to do "git pull", but got the error:</p>
  
  <p>fatal: The remote end hung up unexpectedly
          from /ruby/site_ruby/1.8/gitfarm/utilities.rb:337:in 'execute'
          from -:22:in 'run'
          from -:120
  fatal: The remote end hung up unexpectedly</p>
  
  <p>Could someone please help me in understanding this issue and resolving this.</p>
  
  <p>Thank you</p>
  
  <p>Manu</p>