das_watchdog: switch to fetchFromGitHub

pkgs/tools/system/das_watchdog/default.nix

@@ -1,13 +1,14 @@
-{ lib, stdenv, fetchgit, libgtop, xmessage, which, pkg-config }:
+{ lib, stdenv, fetchFromGitHub, libgtop, xmessage, which, pkg-config }:
 
 stdenv.mkDerivation {
   pname = "das_watchdog";
   version = "unstable-2015-09-12";
 
-  src = fetchgit {
-    url = "https://github.com/kmatheussen/das_watchdog.git";
+  src = fetchFromGitHub {
+    owner = "kmatheussen";
+    repo = "das_watchdog";
     rev = "5ac0db0b98e5b4e690aca0aa7fb6ec60ceddcb06";
-    sha256 = "02y1vfb3wh4908xjj1kpyf8kgxk29x8dw7yl3pnl220qz2gi99vr";
+    sha256 = "sha256-eacUn/gYCEHtHdQf3lBPYvY3kfN3Bik7AolAPpbbwQs=";
   };
 
   nativeBuildInputs = [ pkg-config ];