Curiosity, as it always does, overrode caution.
If you need the complete installer (roughly 8GB–12GB) for a fresh installation or to create a bootable USB drive: Via App Store macos catalina 10157 installer upd
7.1 Creating a Bootable Installer
Catalina is historically significant as the first macOS to . The 10.15.7 update and its subsequent "Supplemental Update" were critical for: Curiosity, as it always does, overrode caution