I always update my 2017 Macbook pro as soon as an OS update comes out. I guess I learned my lesson of not installing the .0 version of any Mac OS update. I finally gave up on fixing various issues with Catalina and got a new loaner from my employer with Mojave on it. Now trying to copy data over to Mojave.
Is it possible to find the date when I upgraded my Macbook pro from Mojave to Catalina? I need to find the time machine backup that was from Mojave so I can restore from that TM backup. Maybe, there is a file somewhere in the filesystem which contains the name of the release?