Why would you do this, rather than pull into a different branch name, fix it there, and then merge it in? Is there an advantage to doing it by altering your own repo?
Yes, but you can pull into a new local branch, do the history edit there, and then push that new branch, can't you? Not that I'm sure it would be worth it.
If you're working in an organization that employs pre-merge code review, you may have to modify your topic branch several times before it's ready to be merged into the main development branch. Creating a new branch every time so that you can push without force seems pointless in this case and increases confusion for everyone involved in the process.
