in dev-tools/mage/gotool/go.go [224:231]
func execGoWith(
fn func(map[string]string, string, ...string) error,
cmd string, args *Args,
) error {
cliArgs := []string{cmd}
cliArgs = append(cliArgs, args.build()...)
return fn(args.env, mg.GoCmd(), cliArgs...)
}