I'm getting used to Go, and trying to understand how it works.

So I'm trying to run the test code from my repository zoonoo/go-ethereum, forked from the original repository ethereum/go-ethereum.

When I run go test . under the eth directory, I get the following error :

eth/api.go:37:2: use of internal package not allowed

37th line of eth/api.go is as follows : "github.com/ethereum/go-ethereum/internal/ethapi"

Does this mean when you fork a go repository, you have to change the path of all dependencies within the code to run the code?
Does Go package system support repository fork at all?