Make it harder to push to a remote

gistfile1.txt

# Add a new remote, called safe
$ git remote add -f safe `git remote -v | grep origin | grep push | awk '{ print $2 }'`
# Set the push url of this remote to nowhere
$ git remote set-url --push safe nowhere
# Set the upstream branch for our branch to safe origin
$ git branch --set-upstream-to=safe/master

# lets try a push
$ git push
fatal: 'nowhere' does not appear to be a git repository
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.