diff --git a/pkgs/development/python-modules/autocommand/default.nix b/pkgs/development/python-modules/autocommand/default.nix
index 3ce1b9ebe001..1b1ab4fe4570 100644
--- a/pkgs/development/python-modules/autocommand/default.nix
+++ b/pkgs/development/python-modules/autocommand/default.nix
@@ -11,19 +11,23 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "Lucretiel";
     repo = "autocommand";
-    rev = version;
+    rev = "refs/tags/${version}";
     hash = "sha256-9bv9Agj4RpeyNJvTLUaMwygQld2iZZkoLb81rkXOd3E=";
   };
 
   # fails with: SyntaxError: invalid syntax
   doCheck = false;
 
-  nativeCheckInputs = [ pytestCheckHook ];
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
 
-  pythonImportsCheck = [ "autocommand" ];
+  pythonImportsCheck = [
+    "autocommand"
+  ];
 
   meta = with lib; {
-    description = " Autocommand turns a python function into a CLI program ";
+    description = "Autocommand turns a python function into a CLI program";
     homepage = "https://github.com/Lucretiel/autocommand";
     license = licenses.lgpl3;
     maintainers = with maintainers; [ ];