1 files changed, 4 insertions, 2 deletions
diff --git a/npins/default.nix b/npins/default.nix
index 6592476..8955703 100644
--- a/npins/default.nix
+++ b/npins/default.nix
@@ -107,12 +107,14 @@ let
           "${if matched == null then "source" else builtins.head matched}${appendShort}";
         name = urlToName url revision;
       in
-      builtins.fetchGit {
+      builtins.fetchGit ({
         rev = revision;
         inherit name;
         # hash = hash;
         inherit url submodules;
-      };
+      } // (if branch != null then {
+	ref = "refs/heads/${branch}";
+      } else {}));
 
   mkPyPiSource =
     { url, hash, ... }: