git squash commits already pushed to orgin

git-squash.sh

#optional, as I messed things up, by not using "--force" or "+<BRANCH>"
git checkout develop
git pull
git checkout develop-vs2015
git pull
#rebase on "develop"
git rebase develop
git push origin +develop-vs2015

#do the squash: 7 commits
# vim:
#     ESC -> commands mode
#     i   -> insert mode
#     :wq -> save and exit
#     S   -> delete line at cursor
git rebase -i origin/develop-vs2015~7 develop-vs2015
git push origin +develop-vs2015