Unfortunately, `go get` rejects repos that have files with ':': https://github.com/golang/go/issues/28001. We have one such file in the tests. This prevents some of the Go tooling from working on the latest release, including pkg.go.dev. So, as a workaround we use a compatible file name in the repository, and rename it when running the test. This is very hacky, but it's okay for a single test.