diff --git a/Documentation/git-pack-objects.adoc b/Documentation/git-pack-objects.adoc
index e38853391b..c86219be91 100644
--- a/Documentation/git-pack-objects.adoc
+++ b/Documentation/git-pack-objects.adoc
@@ -404,8 +404,8 @@ will be automatically changed to version `1`.
 +
 Incompatible with `--delta-islands`. The `--use-bitmap-index` option is
 ignored in the presence of `--path-walk`. The `--path-walk` option
-supports the `--filter=<spec>` forms `blob:none`, `blob:limit=<n>`, and
-`sparse:<oid>`.
+supports the `--filter=<spec>` forms `blob:none`, `blob:limit=<n>`,
+`tree:0`, and `sparse:<oid>`.
 
 
 DELTA ISLANDS
diff --git a/path-walk.c b/path-walk.c
index ce38dcf1e9..cb67b8ce86 100644
--- a/path-walk.c
+++ b/path-walk.c
@@ -390,11 +390,18 @@ static int walk_path(struct path_walk_context *ctx,
 					ctx->info->path_fn_data);
 	}
 
-	/* Expand data for children. */
-	if (list->type == OBJ_TREE) {
+	/*
+	 * Expand tree children, except when the set is directly requested
+	 * _and_ we are otherwise filtering out trees.
+	 */
+	if (list->type == OBJ_TREE &&
+	    (!path_is_for_direct_objects(path) || ctx->info->trees)) {
+		/* Use root path if expanding from tagged/direct trees. */
+		const char *expand_path = !strcmp(path, "/tagged-trees")
+					  ? root_path : path;
 		for (size_t i = 0; i < list->oids.nr; i++) {
 			ret |= add_tree_entries(ctx,
-					    path,
+					    expand_path,
 					    &list->oids.oid[i]);
 		}
 	}
@@ -442,12 +449,12 @@ static int setup_pending_objects(struct path_walk_info *info,
 {
 	struct type_and_oid_list *tags = NULL;
 	struct type_and_oid_list *tagged_blobs = NULL;
-	struct type_and_oid_list *root_tree_list = NULL;
+	struct type_and_oid_list *tagged_trees = NULL;
 
 	if (info->tags)
 		CALLOC_ARRAY(tags, 1);
 	CALLOC_ARRAY(tagged_blobs, 1);
-	root_tree_list = strmap_get(&ctx->paths_to_lists, root_path);
+	CALLOC_ARRAY(tagged_trees, 1);
 
 	/*
 	 * Pending objects include:
@@ -491,14 +498,15 @@ static int setup_pending_objects(struct path_walk_info *info,
 
 		switch (obj->type) {
 		case OBJ_TREE:
-			if (pending->path) {
-				char *path = *pending->path ? xstrfmt("%s/", pending->path)
-							    : xstrdup("");
+			if (pending->path && *pending->path) {
+				char *path = xstrfmt("%s/", pending->path);
 				add_path_to_list(ctx, path, OBJ_TREE, &obj->oid, 1);
 				free(path);
+			} else if (!pending->path || !info->trees) {
+				oid_array_append(&tagged_trees->oids, &obj->oid);
 			} else {
-				/* assume a root tree, such as a lightweight tag. */
-				oid_array_append(&root_tree_list->oids, &obj->oid);
+				add_path_to_list(ctx, root_path, OBJ_TREE,
+						 &obj->oid, 1);
 			}
 			break;
 
@@ -535,6 +543,18 @@ static int setup_pending_objects(struct path_walk_info *info,
 			free(tagged_blobs);
 		}
 	}
+	if (tagged_trees) {
+		if (tagged_trees->oids.nr) {
+			const char *tagged_tree_path = "/tagged-trees";
+			tagged_trees->type = OBJ_TREE;
+			tagged_trees->maybe_interesting = 1;
+			strmap_put(&ctx->paths_to_lists, tagged_tree_path, tagged_trees);
+			push_to_stack(ctx, tagged_tree_path);
+		} else {
+			oid_array_clear(&tagged_trees->oids);
+			free(tagged_trees);
+		}
+	}
 	if (tags) {
 		if (tags->oids.nr) {
 			const char *tag_path = "/tags";
@@ -575,6 +595,19 @@ static int prepare_filters(struct path_walk_info *info,
 		}
 		return 1;
 
+	case LOFC_TREE_DEPTH:
+		if (options->tree_exclude_depth) {
+			error(_("tree:%lu filter not supported by the path-walk API"),
+			      options->tree_exclude_depth);
+			return 0;
+		}
+		if (info) {
+			info->trees = 0;
+			info->blobs = 0;
+			list_objects_filter_release(options);
+		}
+		return 1;
+
 	case LOFC_SPARSE_OID:
 		if (info) {
 			struct object_id sparse_oid;
diff --git a/t/t6601-path-walk.sh b/t/t6601-path-walk.sh
index 92c524d145..566db7c7e3 100755
--- a/t/t6601-path-walk.sh
+++ b/t/t6601-path-walk.sh
@@ -77,23 +77,23 @@ test_expect_success 'all' '
 	3:tree::$(git rev-parse base^{tree})
 	3:tree::$(git rev-parse base~1^{tree})
 	3:tree::$(git rev-parse base~2^{tree})
-	3:tree::$(git rev-parse refs/tags/tree-tag^{})
-	3:tree::$(git rev-parse refs/tags/tree-tag2^{})
 	4:blob:a:$(git rev-parse base~2:a)
-	5:blob:file2:$(git rev-parse refs/tags/tree-tag2^{}:file2)
-	6:tree:a/:$(git rev-parse base:a)
-	7:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
-	8:blob:child/file:$(git rev-parse refs/tags/tree-tag:child/file)
-	9:tree:left/:$(git rev-parse base:left)
-	9:tree:left/:$(git rev-parse base~2:left)
-	10:blob:left/b:$(git rev-parse base~2:left/b)
-	10:blob:left/b:$(git rev-parse base:left/b)
-	11:tree:right/:$(git rev-parse topic:right)
-	11:tree:right/:$(git rev-parse base~1:right)
-	11:tree:right/:$(git rev-parse base~2:right)
-	12:blob:right/c:$(git rev-parse base~2:right/c)
-	12:blob:right/c:$(git rev-parse topic:right/c)
-	13:blob:right/d:$(git rev-parse base~1:right/d)
+	5:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag^{})
+	5:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag2^{})
+	6:blob:file2:$(git rev-parse refs/tags/tree-tag2^{}:file2)
+	7:tree:a/:$(git rev-parse base:a)
+	8:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
+	9:blob:child/file:$(git rev-parse refs/tags/tree-tag:child/file)
+	10:tree:left/:$(git rev-parse base:left)
+	10:tree:left/:$(git rev-parse base~2:left)
+	11:blob:left/b:$(git rev-parse base~2:left/b)
+	11:blob:left/b:$(git rev-parse base:left/b)
+	12:tree:right/:$(git rev-parse topic:right)
+	12:tree:right/:$(git rev-parse base~1:right)
+	12:tree:right/:$(git rev-parse base~2:right)
+	13:blob:right/c:$(git rev-parse base~2:right/c)
+	13:blob:right/c:$(git rev-parse topic:right/c)
+	14:blob:right/d:$(git rev-parse base~1:right/d)
 	blobs:10
 	commits:4
 	tags:7
@@ -471,15 +471,15 @@ test_expect_success 'all, blob:none filter' '
 	3:tree::$(git rev-parse base^{tree})
 	3:tree::$(git rev-parse base~1^{tree})
 	3:tree::$(git rev-parse base~2^{tree})
-	3:tree::$(git rev-parse refs/tags/tree-tag^{})
-	3:tree::$(git rev-parse refs/tags/tree-tag2^{})
-	4:tree:a/:$(git rev-parse base:a)
-	5:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
-	6:tree:left/:$(git rev-parse base:left)
-	6:tree:left/:$(git rev-parse base~2:left)
-	7:tree:right/:$(git rev-parse topic:right)
-	7:tree:right/:$(git rev-parse base~1:right)
-	7:tree:right/:$(git rev-parse base~2:right)
+	4:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag^{})
+	4:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag2^{})
+	5:tree:a/:$(git rev-parse base:a)
+	6:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
+	7:tree:left/:$(git rev-parse base:left)
+	7:tree:left/:$(git rev-parse base~2:left)
+	8:tree:right/:$(git rev-parse topic:right)
+	8:tree:right/:$(git rev-parse base~1:right)
+	8:tree:right/:$(git rev-parse base~2:right)
 	blobs:2
 	commits:4
 	tags:7
@@ -533,15 +533,15 @@ test_expect_success 'all, blob:limit=0 filter' '
 	3:tree::$(git rev-parse base^{tree})
 	3:tree::$(git rev-parse base~1^{tree})
 	3:tree::$(git rev-parse base~2^{tree})
-	3:tree::$(git rev-parse refs/tags/tree-tag^{})
-	3:tree::$(git rev-parse refs/tags/tree-tag2^{})
-	4:tree:a/:$(git rev-parse base:a)
-	5:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
-	6:tree:left/:$(git rev-parse base:left)
-	6:tree:left/:$(git rev-parse base~2:left)
-	7:tree:right/:$(git rev-parse topic:right)
-	7:tree:right/:$(git rev-parse base~1:right)
-	7:tree:right/:$(git rev-parse base~2:right)
+	4:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag^{})
+	4:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag2^{})
+	5:tree:a/:$(git rev-parse base:a)
+	6:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
+	7:tree:left/:$(git rev-parse base:left)
+	7:tree:left/:$(git rev-parse base~2:left)
+	8:tree:right/:$(git rev-parse topic:right)
+	8:tree:right/:$(git rev-parse base~1:right)
+	8:tree:right/:$(git rev-parse base~2:right)
 	blobs:2
 	commits:4
 	tags:7
@@ -572,19 +572,19 @@ test_expect_success 'all, blob:limit=3 filter' '
 	3:tree::$(git rev-parse base^{tree})
 	3:tree::$(git rev-parse base~1^{tree})
 	3:tree::$(git rev-parse base~2^{tree})
-	3:tree::$(git rev-parse refs/tags/tree-tag^{})
-	3:tree::$(git rev-parse refs/tags/tree-tag2^{})
 	4:blob:a:$(git rev-parse base~2:a)
-	5:tree:a/:$(git rev-parse base:a)
-	6:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
-	7:tree:left/:$(git rev-parse base:left)
-	7:tree:left/:$(git rev-parse base~2:left)
-	8:blob:left/b:$(git rev-parse base~2:left/b)
-	9:tree:right/:$(git rev-parse topic:right)
-	9:tree:right/:$(git rev-parse base~1:right)
-	9:tree:right/:$(git rev-parse base~2:right)
-	10:blob:right/c:$(git rev-parse base~2:right/c)
-	11:blob:right/d:$(git rev-parse base~1:right/d)
+	5:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag^{})
+	5:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag2^{})
+	6:tree:a/:$(git rev-parse base:a)
+	7:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
+	8:tree:left/:$(git rev-parse base:left)
+	8:tree:left/:$(git rev-parse base~2:left)
+	9:blob:left/b:$(git rev-parse base~2:left/b)
+	10:tree:right/:$(git rev-parse topic:right)
+	10:tree:right/:$(git rev-parse base~1:right)
+	10:tree:right/:$(git rev-parse base~2:right)
+	11:blob:right/c:$(git rev-parse base~2:right/c)
+	12:blob:right/d:$(git rev-parse base~1:right/d)
 	blobs:6
 	commits:4
 	tags:7
@@ -594,6 +594,55 @@ test_expect_success 'all, blob:limit=3 filter' '
 	test_cmp_sorted expect out
 '
 
+test_expect_success 'all, tree:0 filter' '
+	test-tool path-walk --filter=tree:0 -- --all >out &&
+
+	cat >expect <<-EOF &&
+	0:commit::$(git rev-parse topic)
+	0:commit::$(git rev-parse base)
+	0:commit::$(git rev-parse base~1)
+	0:commit::$(git rev-parse base~2)
+	1:tag:/tags:$(git rev-parse refs/tags/first)
+	1:tag:/tags:$(git rev-parse refs/tags/second.1)
+	1:tag:/tags:$(git rev-parse refs/tags/second.2)
+	1:tag:/tags:$(git rev-parse refs/tags/third)
+	1:tag:/tags:$(git rev-parse refs/tags/fourth)
+	1:tag:/tags:$(git rev-parse refs/tags/tree-tag)
+	1:tag:/tags:$(git rev-parse refs/tags/blob-tag)
+	2:blob:/tagged-blobs:$(git rev-parse refs/tags/blob-tag^{})
+	2:blob:/tagged-blobs:$(git rev-parse refs/tags/blob-tag2^{})
+	3:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag^{tree})
+	3:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag2)
+	blobs:2
+	commits:4
+	tags:7
+	trees:2
+	EOF
+
+	test_cmp_sorted expect out
+'
+
+test_expect_success 'topic only, tree:0 filter' '
+	test-tool path-walk --filter=tree:0 -- topic >out &&
+
+	cat >expect <<-EOF &&
+	0:commit::$(git rev-parse topic)
+	0:commit::$(git rev-parse base~1)
+	0:commit::$(git rev-parse base~2)
+	blobs:0
+	commits:3
+	tags:0
+	trees:0
+	EOF
+
+	test_cmp_sorted expect out
+'
+
+test_expect_success 'tree:1 filter is rejected' '
+	test_must_fail test-tool path-walk --filter=tree:1 -- --all 2>err &&
+	test_grep "tree:1 filter not supported by the path-walk API" err
+'
+
 test_expect_success 'setup sparse filter blob' '
 	# Cone-mode patterns: include root, exclude all dirs, include left/
 	cat >patterns <<-\EOF &&
@@ -625,19 +674,19 @@ test_expect_success 'all, sparse:oid filter' '
 	3:tree::$(git rev-parse base^{tree})
 	3:tree::$(git rev-parse base~1^{tree})
 	3:tree::$(git rev-parse base~2^{tree})
-	3:tree::$(git rev-parse refs/tags/tree-tag^{})
-	3:tree::$(git rev-parse refs/tags/tree-tag2^{})
 	4:blob:a:$(git rev-parse base~2:a)
-	5:blob:file2:$(git rev-parse refs/tags/tree-tag2^{}:file2)
-	6:tree:a/:$(git rev-parse base:a)
-	7:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
-	8:tree:left/:$(git rev-parse base:left)
-	8:tree:left/:$(git rev-parse base~2:left)
-	9:blob:left/b:$(git rev-parse base~2:left/b)
-	9:blob:left/b:$(git rev-parse base:left/b)
-	10:tree:right/:$(git rev-parse topic:right)
-	10:tree:right/:$(git rev-parse base~1:right)
-	10:tree:right/:$(git rev-parse base~2:right)
+	5:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag^{})
+	5:tree:/tagged-trees:$(git rev-parse refs/tags/tree-tag2^{})
+	6:blob:file2:$(git rev-parse refs/tags/tree-tag2^{}:file2)
+	7:tree:a/:$(git rev-parse base:a)
+	8:tree:child/:$(git rev-parse refs/tags/tree-tag:child)
+	9:tree:left/:$(git rev-parse base:left)
+	9:tree:left/:$(git rev-parse base~2:left)
+	10:blob:left/b:$(git rev-parse base~2:left/b)
+	10:blob:left/b:$(git rev-parse base:left/b)
+	11:tree:right/:$(git rev-parse topic:right)
+	11:tree:right/:$(git rev-parse base~1:right)
+	11:tree:right/:$(git rev-parse base~2:right)
 	blobs:6
 	commits:4
 	tags:7