}
 }
 
+void clear_commit_marks_for_object_array(struct object_array *a, unsigned mark)
+{
+       struct object *object;
+       struct commit *commit;
+       unsigned int i;
+
+       for (i = 0; i < a->nr; i++) {
+               object = a->objects[i].item;
+               commit = lookup_commit_reference_gently(object->sha1, 1);
+               if (commit)
+                       clear_commit_marks(commit, mark);
+       }
+}
+
 struct commit *pop_commit(struct commit_list **stack)
 {
        struct commit_list *top = *stack;