Is there a way to make custom url destination based on source in vercel rewrites?

Question

My goal is to extract URL from the pathname and then use that URL as a destination in vercel rewrites to make a proxy

let's say if a user try to open example.com/google.com/search?q=hello then it should rewrite to google.com/search?q=hello

In code I am trying to define like this

"rewrites": [
    {
      "source": "/proxy/:path*",
      "destination": "https://:path*"
    }
  ]

But the thing is that Its appending \* at the end of destination link which is throwing some error.