Getting basic information of a elixir project from GitHub

Questions & Help Questions
6

I could be able to get values with this:

{:ok, ast} = Code.string_to_quoted(code)
Macro.postwalk(ast, fn
  {:def, _line, [{:project, _, _}, [do: fun]]} -> {Keyword.get(fun, :app), Keyword.get(fun, :version)}
  v -> v
end)

But how can access just this tuple? {Keyword.get(fun, :app), Keyword.get(fun, :version)} and skip the others?