The two common patterns to forking a module are (1) forking via a separate repo or (2) vendoring, which forks all deps into the current module (or app). I recommend a third approach to forking using git subtree and go mod edit -replace. It’s very similar to repo forking without the repo

Let’s say you’ve made modifications to github.com/tj/go-spin. Once preserving changes in a repo is needed, use git subtree to move the fork into your monorepo, or app repo

Here’s a benchmark comparing pi-hole running on a Pi Zero (with USB ethernet) vs a Pi 3b+.

tl;dr There was negligible performance difference for blocked domains, but a measurable difference in mean for forwarded + cacheable domains. Although the Pi 3b+ has a 11ms better mean response time for forwarded queries, the P95 for pi zero is better in both blocked and forwarded queries.

I would recommend using the Pi Zero.