As part of my struggles to fix my constantly-crashing suggestd process (and the Spotlight failures that it seems to cause), I reinstalled macOS Mojave a couple of times using the Internet Recovery partition. These were in-place reinstalls, so I didn't start completely clean, but the OS is reinstalled from scratch—so much so that I even had to run the 10.14.6 updater and a couple of security updates again.
