"macOS Mojave.app" is the name of the download I just got from the App Store

Correction: it downloaded without "Install", but is now named "Install macOS Mojave.app" - which follows their conventional naming.

I always approach with both the Process name & application.

'Restrict Exact Process Name' & restrict the process 'Install macOS Mojave' - should do the trick

My restricted software is preventing Mojave updates.

The Process Name is set to:

Install macOS Mojave.app

I have set "Restrict exact process name" enabled.

I have not tested if the results are the same if you do not include the file extension ".app".

Thank you guys it finally worked. We added all your suggestions.
As @Hugonaut said it is probably the best to add as much as possible :)

Glad to help!

Anyone finding this not working recently? I've got Jamf Pro 10.8, and it just DOESN'T work. Created 4 different restrictions based on InstallAssistant, osinstallersetupd, "Install macOS Mojave" and "Install macOS Mojave.app". I can still launch the installer on machines. =-/

Oh, no, it works (sorta). Clearly jamf is just looking at running processes every 30 seconds or so and killing any disallowed ones it finds.