How to download macOS High Sierra from the Mojave App Store? I use the beta of macOS Mojave and I want to download High Sierra for another install.

I don't find it in the new App Store, maybe because the update of the OS is now in the System Preferences.

I try the link from the online version: https://itunes.apple.com/us/app/macos-high-sierra/id1246284741?mt=12 but the Download button is disabled.

Any idea to download it?
In previous versions of the beta this was not possible.  But in the latest release (as of 9/15/18) it is possible to use direct links to open the download page.

This links can be found on Apple's How To Download pages.  

Here are the direct links for a some of them:


High Sierra
Sierra
El Capitan
Yosemite


All other OS can be purchased from Apple directly and are not in the App Store.