message: Remove a stray character from the Zsh completion script
  That's not a command that people normally use, found it by accident...
diff: @@ -136,7 +136,7 @@ case $state in
  git-checkout)
  _arguments \
  '(-h, --help)'{-h,--help}'[show help message]' \
  - 'q(-q, --quiet)'{-q,--quiet}'[no output printed to stdout]' \
  + '(-q, --quiet)'{-q,--quiet}'[no output printed to stdout]' \
  '--reference=[REF]' \
  '--url=[URL]' \
  '(-v, --verbose)'{-v,--verbose}'[use verbose output]' \
  