diff --git a/test/repo_test.rb b/test/repo_test.rb
index e36320edf..a3668f7b5 100644
--- a/test/repo_test.rb
+++ b/test/repo_test.rb
@@ -580,6 +580,8 @@ def test_clone_with_update_tips_callback
 
     repo = Rugged::Repository.clone_at(@source_path, @tmppath, {
       update_tips: lambda { |refname, a, b|
+        # The library seems to be sending us no-op updates
+        next if a == b
         calls += 1
         updated_tips[refname] = [a, b]
       }
diff --git a/vendor/libgit2 b/vendor/libgit2
index a2bde6374..9b2577f8e 160000
--- a/vendor/libgit2
+++ b/vendor/libgit2
@@ -1 +1 @@
-Subproject commit a2bde63741977ca0f4ef7db2f609df320be67a08
+Subproject commit 9b2577f8e0ea5e412040566176636b26843ce67d