They also mentioned "hot," which could be a typo or slang. Maybe they mean recent or the latest in their area? Or perhaps they're referring to a high-speed download. But in any case, the main issue is getting the macOS Catalina DMG without the App Store method.
But wait, Apple doesn't provide direct DMG links anymore for macOS versions. They usually distribute through the App Store. For Catalina, you have to download the installer from there. However, sometimes users have issues downloading through the App Store, maybe due to network errors or app store changes. They might be looking for alternative ways. They also mentioned "hot," which could be a typo or slang
Another angle: the user might not have a macOS with the App Store installed yet, or they want a direct link for a clean install. But for a clean install, you typically use Disk Utility and a USB drive. So maybe they're trying to bypass the App Store download. But in any case, the main issue is
Also, check if the user is on a Mac that supports Catalina. Macs older than 2015-2016 might not support Catalina. They need to verify their Mac's compatibility. For Catalina, you have to download the installer from there
Also, the DMG file is the disk image used to create the bootable USB. So the user might actually need instructions on making a bootable USB from the DMG or from the Install app.