How do you --amend?

How does one use git-cz to amend a commit message? It does not seem to be handling extra arguments.

$ git status
On branch master
Your branch is ahead of 'origin/master' by 1 commit.
  (use "git push" to publish your local commits)
nothing to commit, working directory clean
$ git-cz -a --amend
[...]
✗ Commit failed. Did you forget to 'git add' your files?

Thank you

[davidungio]

Is it possible to have the commitizen dialogue load when using git cz --amend?

[sebastienbarre]

And surprisingly, giz-cz -a does work…