403 error when fetching packages from crates.io

I’ve started getting 403 errors when attempting to fetch tarballs from crates.io, similar to what’s being described in this pull request. It doesn’t seem that the fix has been backported to the 26.05 channel yet, or if it has, it doesn’t seem to be working correctly. Do I have to maintain a fork of the channel with the fix for now, or are there other ways to incorporate it into my config?