From https://github.com/r0kin/louiskelly.uk! [rejected] laravel -> laravel (non-fast-forward) code example

Example: rejected master -> master (non-fast-forward)

# if you updated your files on github.com so may be thats its asking first pull
# request then your push the request.
# so Very simple first:
# not use -f 
git pull origin master
# then
git push origin master