diff --git a/revision.c b/revision.c
index 13e0519c02..60421f3a10 100644
--- a/revision.c
+++ b/revision.c
@@ -99,6 +99,31 @@ void mark_tree_uninteresting(struct repository *r, struct tree *tree)
 	mark_tree_contents_uninteresting(r, tree);
 }
 
+void mark_trees_uninteresting_sparse(struct repository *r,
+				     struct oidset *trees)
+{
+	struct object_id *oid;
+	struct oidset_iter iter;
+
+	oidset_iter_init(trees, &iter);
+	while ((oid = oidset_iter_next(&iter))) {
+		struct tree *tree = lookup_tree(r, oid);
+
+		if (!tree)
+			continue;
+
+		if (tree->object.flags & UNINTERESTING) {
+			/*
+			 * Remove the flag so the next call
+			 * is not a no-op. The flag is added
+			 * in mark_tree_unintersting().
+			 */
+			tree->object.flags ^= UNINTERESTING;
+			mark_tree_uninteresting(r, tree);
+		}
+	}
+}
+
 struct commit_stack {
 	struct commit **items;
 	size_t nr, alloc;
diff --git a/revision.h b/revision.h
index 7987bfcd2e..df684701b9 100644
--- a/revision.h
+++ b/revision.h
@@ -67,6 +67,7 @@ struct rev_cmdline_info {
 #define REVISION_WALK_NO_WALK_SORTED 1
 #define REVISION_WALK_NO_WALK_UNSORTED 2
 
+struct oidset;
 struct topo_walk_info;
 
 struct rev_info {
@@ -327,6 +328,7 @@ void put_revision_mark(const struct rev_info *revs,
 
 void mark_parents_uninteresting(struct commit *commit);
 void mark_tree_uninteresting(struct repository *r, struct tree *tree);
+void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *trees);
 
 void show_object_with_name(FILE *, struct object *, const char *);