I have a public repository. No one else has forked, pulled, or done anything else to it. I made some minor changes to one file, successfully committed them, and tried to push. It says 'Everything up-to-date'. There are no branches. I'm very, very new to git and I don't understand what on earth is going on.

git remote show origin tells me:

HEAD branch: master
  Remote branch:
    master tracked
  Local ref configured for 'git push':
    master pushes to master (up to date)

Any ideas what I can do to make this understand that it's NOT up to date?

Thanks

Updates: git status:

# On branch master
# Untracked files:
#   (use "git add ..." to include in what will be committed)
#
#       histmarkup.el
#       vendor/yasnippet-0.6.1c/snippets/
no changes added to commit (use "git add" and/or "git commit -a")

git branch -a:

* master
  remotes/origin/master

git fsck:

dangling tree 105cb101ca1a4d2cbe1b5c73eb4a238e22cb4998
dangling tree 85bd0461f0fcb1618d46c8a80d3a4a7932de34bb

Update 2: I re-opened the modified file, and the modifications I KNOW I had made were gone. So I added them again, went through the rigamarole of git status, git add filename, git commit -m "(message)", and git push origin master, and all of a sudden it works the way it's supposed to.