'Unable to authenticate to Azure DevOps using Personal Access Token (302 redirect)

I followed the Azure DevOps docs for how to create a Personal Access Token, convert the token to Base64 and GET repo branches, but I cannot successfully request.

What am I missing?

PowerAutomate Action: HTTP Request

Where myOrg, myProject and myRepoID are actual values

Error: 302 Redirect

Error Text:

<html><head><title>Object moved</title></head><body>
<h2>Object moved to <a href="https://spsprodcus3.vssps.visualstudio.com/_signin?realm=dev.azure.com&amp;reply_to=https%3A%2F%2Fdev.azure.com%2FmyOrg%2FmyProject%2F_apis%2Fgit%2Frepositories%2FmyRepoID%2Frefs%3Fapi-version%3D6.0&amp;redirect=1&amp;hid=<longGUID>&amp;context=<longGUIDctx=<longGUID">here</a>.</h2>
</body></html>

EDIT 1:

Tried adding the Content-Type header and adding the auth as a special header
Still same error

EDIT 2:

Tried adding the PAT to Basic auth but the Username is required

EDIT 3:

I found that even though above action fails, the response Location header contains a URL that resolves correctly:
- https://spsprodcus3.vssps.visualstudio.com/_signin?realm=dev.azure.com&reply_to=https%3A%2F%2Fdev.azure.com%2FmyOrg%2FmyProject%2F_apis%2Fgit%2Frepositories%3Fapi-version%3D6.0&redirect=1&mkt=en-US&hid=LONG_GUID&context=LONG_GUIDctx=LONG_GUID
BUT when this URL is piped to a subsequent HTTP action, it results in a 203 response that does not include the REST response!