ubuntu 20.04 hash sum mismatch failed to fetch code example
Example: ubuntu bionic update security has sum mismatch
sudo rm -rf /var/lib/apt/lists/partial
sudo apt-get update -o Acquire::CompressionTypes::Order::=gz
sudo rm -rf /var/lib/apt/lists/partial
sudo apt-get update -o Acquire::CompressionTypes::Order::=gz