heroku git:remote -a desolate-springs-1684

error: failed to push some refs to 'git@heroku.com:desolate-springs-1684.git'
To prevent you from losing history, non-fast-forward updates were rejected
Merge the remote changes (e.g. 'git pull') before pushing again.  See the
'Note about fast-forwards' section of 'git push --help' for details.
localhost:nhl michaelmitchell$

git push -f heroku master

$ git pull heroku master
$ git push heroku master

$ git pull --rebase heroku master
$ git push heroku master

$ git pull heroku

git pull heroku master