Can't download Big Sur 11.0.1 RC 2 to DTK machine

Attempting to update over the last couple of days just returns "Download failed. An error occurred while downloading the selected updates. Please check your internet connection and try again." Internet connection is fine. I can do anything else I want using the internet; just can't update Mac OS.

Trying to download to Apple Development Platform running 11.0 Beta (20A5299w)
Can't download Big Sur 11.0.1 RC 2 to DTK machine
 
 
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