It seems like the repository you're looking for has been relocated to a new address: https://github.com/franken-ui/wc. If you're having trouble accessing it, it's likely that some updates are being made behind the scenes. Would you mind waiting for a bit and trying again? I'm sure it'll be available soon!
sveltecult/franken-ui-releases
The "no-build" port of shadcn/ui. Harnessing the power of UIkit 3 JavaScript and accessibility.
JavaScriptMIT