https://fetch.spec.whatwg.org/commit-snapshots/9862bc5923c32b070486f27a22a0c3d8a61cb5d0/#response-class
Set r’s response’s status to status.
r's response's status message never gets changed from the default `OK`. Is that correct?
In Firefox and Chrome it does appear that
Response.redirect("https://example.com/", 301).statusText === "OK"
which is kinda weird.