// 'go get' no longer builds or installs packages, so there's nothing to do
	// if there's no go.mod file.
	// TODO(#40775): make modload.Init return ErrNoModRoot instead of exiting.
	// We could handle that here by printing a different message.
	modload.Init()
	if !modload.HasModRoot() {
		base.Fatalf("go: go.mod file not found in current directory or any parent directory.\n" +