Moving from fetchgit generated by go2nix to fetchFromGitHub where rev is

a tag

pkgs/servers/nsq/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, buildGoPackage, fetchgit, fetchhg, fetchbzr, fetchsvn }:
+{ stdenv, lib, buildGoPackage, fetchFromGitHub }:
 
 buildGoPackage rec {
   name = "nsq-${version}";
@@ -7,9 +7,10 @@ buildGoPackage rec {
 
   goPackagePath = "github.com/bitly/nsq";
 
-  src = fetchgit {
+  src = fetchFromGitHub {
     inherit rev;
-    url = "https://github.com/nsqio/nsq";
+    owner = "bitly";
+    repo = "nsq";
     sha256 = "1r7jgplzn6bgwhd4vn8045n6cmm4iqbzssbjgj7j1c28zbficy2f";
   };