git push origin <your_branch_name> --force
or if you have a specific repo:
git push https://git.... --force
This will delete your previous commit(s) and push your current one.
It may not be proper, but if anyone stumbles upon this page, thought they might want a simple solution...
Also note that
-f is short for
git push origin <your_branch_name> -f
will also work.
~ Answered on 2012-09-26 21:31:33