No, I did NOT use "Reset this PC."
I used "Fresh Start." It's actually a part of Windows Security. Just search for "Fresh" within settings.
Yes, I ended up with the latest version of Windows 1903. Note, that I had already updated my computer to 1903 before I did this Fresh Start. The whole process took about 20 minutes of downloading and rebooting. When it was done, I did a single additional update and it downloaded one update that took one more reboot.
Good luck.