Is there any rawhide.json for the Fedora CoreOS rawhide builds?

I can download Stream metadata for the next stream under the URL
but there is no corresponding URL for the rawhide stream:

Shouldn’t there be one?
It would make it easier to try out the rawhide builds.

(I understand that the rawhide stream is experimental and not supported)

$ curl -s | head -5
    "stream": "next",
    "metadata": {
        "last-modified": "2021-06-29T10:21:47Z"
$ curl -s | head -5
<?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>34JBQ0V9EMCP9CF9</RequestId><HostId>ptbFDVVaCSvT9birawsztm0XMqs2hSYGmobP4vjUrh1Yrj3tZ6xd9pJMNScUuaR0LRcMebW2Ivk=</HostId></Error>$ 

Mechanical refs intentionally don’t have stream metadata. That was an early design decision, and we could revisit it. But note that those refs don’t undergo any package curation at all, so they’ll likely be less functional than the nightly builds of our development branches.

I would be interested to use rawhide (or the nightly builds of the development branches) in

One input parameter to that GitHub Action is the name of the stream (stable, testing or next).
The metadata JSON is then downloaded from

 const json_url = `${stream}.json`;