The Revit_2020_G1_Win_64bit_r3 installation files from the accounts portal are for the Revit 2020.2.1 full installer, which includes all updates/hotfixes up to and including the 2020.2.1 Hotfix. The Revit 2020.2.2 Hotfix was only recently released and will need to be installed to bring your Revit installation up to date.
Tony Michniewicz
Revit Software QA Analyst