[boost] [Git] Pull requests and rebasing

So I have a rebase vs pull question: Lets say I have a PR, if I merge that to my local tree using "git pull --rebase remote-repro branch-name" then I get a nice clean history locally without those pesky merge commits cluttering everything up. But... Now I can't fast-forward when I push to the remote, *because I've changed the existing history of the develop branch*. Would this not be a) bad form, and b) potentially dangerous to push to the remote develop branch? Still don't understand Git yours, John.