macOS Mojave (10.14) - how to get a full installer without using the macOS Mojave Patcher Tool [duplicate]

I just want to install macOS Mojave (10.14) on one of my Macs without an internet connection. Therefore, I need an "offline" installer.

With previous versions of macOS I used the createinstallmedia command without any problems. However, this time I can't use this because when I download the installer from the Mac App Store on another Mac I only get a file that is 22 MBs in size.

I am aware of the "macOS Mojave Patcher Tool" but for my own reasons do not want to use this.

In summary, how do I create/obtain an offline installer without having to use the macOS Mojave Patcher Tool in a situation that downloading from the Mac App Store isn't possible?

Link from Apple to create offline installer:

https://support.apple.com/en-us/HT201372

Under "Download macOS" there are links in blue to macOS Catalina, macOS Mojave, macOS High Sierra, etc.

Click the link & scroll down to step 4 - the link to download your desired OS will open the app store & bring you to the download page.

Note: you need to open the link on macOS using Safari for it to work properly.