My system is running on 10.14.6 (18G4023), though I'm not exactly sure how it's running. I had put off doing updates to my stock Mojave installation because I couldn't afford to deal with issues. Recently I tried to update, thinking that I'd get to 103. Instead, my system upgraded directly to 4023. The normal install and reboot process happened a couple/few times as expected, then the boot process failed. I hadn't updated clover, and when the final disk selection for Mojave occurred, the machine would simply reboot a few seconds into the startup sequence. Turning on -verbose mode showed a lot of text, but the screen would then immediately boot into the hardware startup image. I could boot into recovery, and thought about reinstalling from a backup image, but decided to try other options first.
I was able to get past the startup crash by trying a 'Reboot from Reboot' image option; the first choice on the left in Clover. Then the startup sequence proceeded normally. Now the system is running, but there's no certainty that It'll work again if the machine gets shut down. I'll cross my fingers and give it a try. Oh, but first I'm going to backup some needed work files, in case the machine doesn't want to restart and I don't have the time to diagnose further.