custom defn isn't analyzed properly

[borkdude]

(ns foo
  (:refer-clojure :exclude [defn])
  (:require [clojure.core :as core]))

(core/defmacro defn [name & body]
  `(core/defn ~name ~@body))

(defn foo [])

The :var-definition of foo/defn has namespace clojure.core which is wrong, it should be foo

I found this while solving a custom defn problem for metabase