Why won't Pi-hole's core version update past v3.2.1 when pihole -up is run?

FAQs
1

36344748-a4c5d0bc-13d3-11e8-8fe0-84534f3dc006

This is a known issue following the release of v3.3. You can run these commands to fix the issue:

cd /etc/.pihole && sudo git fetch --tags