diff --git a/revision.c b/revision.c
index 087d64d572..3628ef963d 100644
--- a/revision.c
+++ b/revision.c
@@ -750,7 +750,6 @@ static int check_maybe_different_in_bloom_filter(struct rev_info *revs,
 						 struct commit *commit)
 {
 	struct bloom_filter *filter;
-	int result = 0;
 
 	if (!revs->bloom_keyvecs_nr)
 		return -1;
@@ -765,18 +764,29 @@ static int check_maybe_different_in_bloom_filter(struct rev_info *revs,
 		return -1;
 	}
 
-	for (size_t nr = 0; !result && nr < revs->bloom_keyvecs_nr; nr++) {
-		result = bloom_filter_contains_vec(filter,
-						   revs->bloom_keyvecs[nr],
-						   revs->bloom_filter_settings);
+	if (revs_maybe_changed_in_bloom(revs, filter)) {
+		count_bloom_filter_maybe++;
+		return 1;
 	}
 
-	if (result)
-		count_bloom_filter_maybe++;
-	else
-		count_bloom_filter_definitely_not++;
+	count_bloom_filter_definitely_not++;
 
-	return result;
+	return 0;
+}
+
+bool revs_maybe_changed_in_bloom(struct rev_info *revs,
+				 struct bloom_filter *filter)
+{
+	if (!revs->bloom_keyvecs_nr || !filter)
+		return true;
+
+	for (size_t nr = 0; nr < revs->bloom_keyvecs_nr; nr++)
+		if (bloom_filter_contains_vec(filter,
+					      revs->bloom_keyvecs[nr],
+					      revs->bloom_filter_settings))
+			return true;
+
+	return false;
 }
 
 static int rev_compare_tree(struct rev_info *revs,
diff --git a/revision.h b/revision.h
index 569b3fa1cb..14be39e20c 100644
--- a/revision.h
+++ b/revision.h
@@ -68,6 +68,7 @@ struct string_list;
 struct saved_parents;
 struct follow_pathspec_slab;
 struct bloom_keyvec;
+struct bloom_filter;
 struct bloom_filter_settings;
 struct option;
 struct parse_opt_ctx_t;
@@ -493,6 +494,17 @@ void reset_revision_walk(void);
  */
 int prepare_revision_walk(struct rev_info *revs);
 
+/**
+ * Consult a changed-path Bloom filter to determine if the commit to which the
+ * filter belongs might have changed any of the paths in the `revs`.
+ * prepare_revision_walk() needs to be called in advance to ensure
+ * pathspec key vectors are set up.
+ *
+ * Returns false iff the commit definitely did not change any of the paths.
+ */
+bool revs_maybe_changed_in_bloom(struct rev_info *revs,
+				 struct bloom_filter *filter);
+
 /* Drain the commits linked list into the priority queue. */
 void rev_info_commit_list_to_queue(struct rev_info *revs);
 /**