I'm not sure if you wanted/needed this (don't completely understand your post
) but in case you did - here's what I did exactly...
then replaced all instances of "$releasever" with "development"
After this, I edited my individual .repo files (you only have these if you make them yourself)
and did the same thing.
fresh.repo is just an example...
Hope this is useful to somebody - apparently we'll have no more problems on this count once the final version is updated and the repositories are updated seriously.