Thefuck is incorrectly adding the remote name at the end of the command suggestion:
$ git push myfork
fatal: The current branch test-branch has no upstream branch.
To push the current branch and set the remote as upstream, use
git push --set-upstream myfork test-branch
$ fuck
git push --set-upstream myfork test-branch myfork [enter/↑/↓/ctrl+c]
error: src refspec myfork does not match any.
error: failed to push some refs to '[email protected]:waldyrious/project-foo.git'