diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6a4e072..3d99410 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -20,7 +20,7 @@ repos:
       - id: sort-simple-yaml
       - id: trailing-whitespace
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: 'v0.1.13'
+    rev: 'v0.2.2'
     hooks:
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix]
diff --git a/src/scmrepo/git/backend/dulwich/__init__.py b/src/scmrepo/git/backend/dulwich/__init__.py
index d73a8a9..022e8cc 100644
--- a/src/scmrepo/git/backend/dulwich/__init__.py
+++ b/src/scmrepo/git/backend/dulwich/__init__.py
@@ -842,7 +842,7 @@ def _describe(
             if revision and revision not in rev_mapping:
                 rev_mapping[revision] = ref
         for rev in revs:
-            results[rev] = rev_mapping.get(rev, None)
+            results[rev] = rev_mapping.get(rev)
         return results
 
     def diff(self, rev_a: str, rev_b: str, binary=False) -> str: