Golang builds pulling a github.com/foo/bar/baz module don't rely on any GitHub "build workflow", so unless you mean they're going to start restricting or charging for git clones for public repos (before you mention Docker Hub, yes I know), nothing's gonna change. And even if they're crazy enough to do that, Go module downloads default to a proxy (proxy.golang.org by default, can be configured and/or self-hosted) and only fall back to vcs if the module's not available, so a module only needs to be downloaded once from GitHub anyway. Oh and once a module is cached in the proxy, the proxy will keep serving it even if the repo/tag is removed from GitHub.