fly deploy --remote-only fails because it could not fetch a file

the error:

#23 1.061 09:14:06.162 [debug] Downloading tailwind from https://github.com/tailwindlabs/tailwindcss/releases/download/v3.1.8/tailwindcss-linux-x64
#23 1.542 ** (RuntimeError) couldn't fetch https://github.com/tailwindlabs/tailwindcss/releases/download/v3.1.8/tailwindcss-linux-x64: {:error, {:failed_connect, [{:to_address, {'objects.githubusercontent.com', 443}}, {:inet, [:inet], :closed}]}}

This issue seems similar to mix local.hex --force network error in remote builder and fly deploy fails as cannot reach rubygems.org

It seems to work again.