title: cannot push to github: everything up-to-date
body: <p>On github, I forked an old version of another project. I made some changes and am trying to push them onto my fork on github. I commited the changes locally, then tried git push, but this simply tells me "Everything up-to-date". When I browse the project on github, however, nothing has changed: it still shows the files (from the latest version) on my fork, unmodified. How can I push the changes to my github account?</p>
  
  <p>(I realize this isn't much information...what else can I say? I have a feeling that it may be because I'm modifying the files directly in (home)/git/(project)...?)</p>