diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index a986f08a94..ff244c866f 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -9,6 +9,7 @@
 #include "commit-graph.h"
 #include "odb.h"
 #include "odb/source.h"
+#include "odb/source-files.h"
 #include "progress.h"
 #include "replace-object.h"
 #include "strbuf.h"
@@ -68,7 +69,7 @@ static int graph_verify(int argc, const char **argv, const char *prefix,
 			struct repository *repo UNUSED)
 {
 	struct commit_graph *graph = NULL;
-	struct odb_source *source = NULL;
+	struct odb_files_dir *dir = NULL;
 	char *graph_name;
 	char *chain_name;
 	enum { OPENED_NONE, OPENED_GRAPH, OPENED_CHAIN } opened = OPENED_NONE;
@@ -103,9 +104,12 @@ static int graph_verify(int argc, const char **argv, const char *prefix,
 	if (opts.progress)
 		flags |= COMMIT_GRAPH_WRITE_PROGRESS;
 
-	source = odb_find_source_or_die(the_repository->objects, opts.obj_dir);
-	graph_name = get_commit_graph_filename(source->path);
-	chain_name = get_commit_graph_chain_filename(source->path);
+	dir = odb_source_files_find_dir(the_repository->objects, opts.obj_dir);
+	if (!dir)
+		die(_("could not find object directory matching %s"), opts.obj_dir);
+
+	graph_name = get_commit_graph_filename(dir->abspath);
+	chain_name = get_commit_graph_chain_filename(dir->abspath);
 	if (open_commit_graph(graph_name, &fd, &st))
 		opened = OPENED_GRAPH;
 	else if (errno != ENOENT)
@@ -123,7 +127,7 @@ static int graph_verify(int argc, const char **argv, const char *prefix,
 	if (opened == OPENED_NONE)
 		return 0;
 	else if (opened == OPENED_GRAPH)
-		graph = load_commit_graph_one_fd_st(the_repository, source->path, fd, &st);
+		graph = load_commit_graph_one_fd_st(the_repository, dir->abspath, fd, &st);
 	else
 		graph = load_commit_graph_chain_fd_st(the_repository->objects, fd, &st,
 						      &incomplete_chain);
@@ -226,7 +230,7 @@ static int graph_write(int argc, const char **argv, const char *prefix,
 	struct string_list pack_indexes = STRING_LIST_INIT_DUP;
 	struct strbuf buf = STRBUF_INIT;
 	struct oidset commits = OIDSET_INIT;
-	struct odb_source *source = NULL;
+	struct odb_files_dir *dir = NULL;
 	int result = 0;
 	enum commit_graph_write_flags flags = 0;
 	struct progress *progress = NULL;
@@ -294,10 +298,12 @@ static int graph_write(int argc, const char **argv, const char *prefix,
 	    git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
 		flags |= COMMIT_GRAPH_WRITE_BLOOM_FILTERS;
 
-	source = odb_find_source_or_die(the_repository->objects, opts.obj_dir);
+	dir = odb_source_files_find_dir(the_repository->objects, opts.obj_dir);
+	if (!dir)
+		die(_("could not find object directory matching %s"), opts.obj_dir);
 
 	if (opts.reachable) {
-		if (write_commit_graph_reachable(the_repository, source->path, flags, &write_opts))
+		if (write_commit_graph_reachable(the_repository, dir->abspath, flags, &write_opts))
 			result = 1;
 		goto cleanup;
 	}
@@ -306,7 +312,7 @@ static int graph_write(int argc, const char **argv, const char *prefix,
 		struct strbuf packname = STRBUF_INIT;
 		size_t dirlen;
 
-		strbuf_addf(&packname, "%s/pack/", source->path);
+		strbuf_addf(&packname, "%s/pack/", dir->abspath);
 		dirlen = packname.len;
 
 		while (strbuf_getline(&buf, stdin) != EOF) {
@@ -334,7 +340,7 @@ static int graph_write(int argc, const char **argv, const char *prefix,
 		stop_progress(&progress);
 	}
 
-	if (write_commit_graph(the_repository, source->path,
+	if (write_commit_graph(the_repository, dir->abspath,
 			       opts.stdin_packs ? &pack_indexes : NULL,
 			       opts.stdin_commits ? &commits : NULL,
 			       flags,
diff --git a/builtin/multi-pack-index.c b/builtin/multi-pack-index.c
index a170ec80b9..fc8b494996 100644
--- a/builtin/multi-pack-index.c
+++ b/builtin/multi-pack-index.c
@@ -86,13 +86,13 @@ static int parse_object_dir(const struct option *opt, const char *arg,
 	return 0;
 }
 
-static struct odb_source_files *handle_object_dir_option(struct repository *repo)
+static struct odb_source_packed *handle_object_dir_option(struct repository *repo)
 {
-	struct odb_source *source = odb_find_source(repo->objects, opts.object_dir);
-	if (!source)
+	struct odb_files_dir *dir = odb_source_files_find_dir(repo->objects, opts.object_dir);
+	if (!dir)
 		die(_("object directory is not an alternate of the current repository: '%s'"),
 		    opts.object_dir);
-	return odb_source_files_downcast(source);
+	return dir->packed;
 }
 
 static struct option common_opts[] = {
@@ -169,7 +169,7 @@ static int cmd_multi_pack_index_write(int argc, const char **argv,
 			     N_("refs snapshot for selecting bitmap commits")),
 		OPT_END(),
 	};
-	struct odb_source_files *source;
+	struct odb_source_packed *packed_source;
 	int ret;
 
 	opts.flags |= MIDX_WRITE_BITMAP_HASH_CACHE;
@@ -204,7 +204,7 @@ static int cmd_multi_pack_index_write(int argc, const char **argv,
 				   options);
 	}
 
-	source = handle_object_dir_option(repo);
+	packed_source = handle_object_dir_option(repo);
 
 	FREE_AND_NULL(options);
 
@@ -213,7 +213,7 @@ static int cmd_multi_pack_index_write(int argc, const char **argv,
 
 		read_packs_from_stdin(&packs);
 
-		ret = write_midx_file_only(source->dirs->packed, &packs,
+		ret = write_midx_file_only(packed_source, &packs,
 					   opts.preferred_pack,
 					   opts.refs_snapshot,
 					   opts.incremental_base, opts.flags);
@@ -225,7 +225,7 @@ static int cmd_multi_pack_index_write(int argc, const char **argv,
 
 	}
 
-	ret = write_midx_file(source->dirs->packed, opts.preferred_pack,
+	ret = write_midx_file(packed_source, opts.preferred_pack,
 			      opts.refs_snapshot, opts.flags);
 
 	free(opts.refs_snapshot);
@@ -239,7 +239,7 @@ static int cmd_multi_pack_index_compact(int argc, const char **argv,
 	struct multi_pack_index *m, *cur;
 	struct multi_pack_index *from_midx = NULL;
 	struct multi_pack_index *to_midx = NULL;
-	struct odb_source_files *source;
+	struct odb_source_packed *packed_source;
 	int ret;
 
 	struct option *options;
@@ -280,11 +280,11 @@ static int cmd_multi_pack_index_compact(int argc, const char **argv,
 				   options);
 	}
 
-	source = handle_object_dir_option(the_repository);
+	packed_source = handle_object_dir_option(the_repository);
 
 	FREE_AND_NULL(options);
 
-	m = get_multi_pack_index(source->dirs->packed);
+	m = get_multi_pack_index(packed_source);
 
 	for (cur = m; cur && !(from_midx && to_midx); cur = cur->base_midx) {
 		const char *midx_csum = midx_get_checksum_hex(cur);
@@ -307,7 +307,7 @@ static int cmd_multi_pack_index_compact(int argc, const char **argv,
 			die(_("MIDX %s must be an ancestor of %s"), argv[0], argv[1]);
 	}
 
-	ret = write_midx_file_compact(source->dirs->packed, from_midx, to_midx,
+	ret = write_midx_file_compact(packed_source, from_midx, to_midx,
 				      opts.incremental_base, opts.flags);
 
 	return ret;
@@ -321,7 +321,7 @@ static int cmd_multi_pack_index_verify(int argc, const char **argv,
 	static struct option builtin_multi_pack_index_verify_options[] = {
 		OPT_END(),
 	};
-	struct odb_source_files *source;
+	struct odb_source_packed *packed_source;
 
 	options = add_common_options(builtin_multi_pack_index_verify_options);
 
@@ -335,11 +335,11 @@ static int cmd_multi_pack_index_verify(int argc, const char **argv,
 	if (argc)
 		usage_with_options(builtin_multi_pack_index_verify_usage,
 				   options);
-	source = handle_object_dir_option(the_repository);
+	packed_source = handle_object_dir_option(the_repository);
 
 	FREE_AND_NULL(options);
 
-	return verify_midx_file(source->dirs->packed, opts.flags);
+	return verify_midx_file(packed_source, opts.flags);
 }
 
 static int cmd_multi_pack_index_expire(int argc, const char **argv,
@@ -350,7 +350,7 @@ static int cmd_multi_pack_index_expire(int argc, const char **argv,
 	static struct option builtin_multi_pack_index_expire_options[] = {
 		OPT_END(),
 	};
-	struct odb_source_files *source;
+	struct odb_source_packed *packed_source;
 
 	options = add_common_options(builtin_multi_pack_index_expire_options);
 
@@ -364,11 +364,11 @@ static int cmd_multi_pack_index_expire(int argc, const char **argv,
 	if (argc)
 		usage_with_options(builtin_multi_pack_index_expire_usage,
 				   options);
-	source = handle_object_dir_option(the_repository);
+	packed_source = handle_object_dir_option(the_repository);
 
 	FREE_AND_NULL(options);
 
-	return expire_midx_packs(source->dirs->packed, opts.flags);
+	return expire_midx_packs(packed_source, opts.flags);
 }
 
 static int cmd_multi_pack_index_repack(int argc, const char **argv,
@@ -381,7 +381,7 @@ static int cmd_multi_pack_index_repack(int argc, const char **argv,
 		  N_("during repack, collect pack-files of smaller size into a batch that is larger than this size")),
 		OPT_END(),
 	};
-	struct odb_source_files *source;
+	struct odb_source_packed *packed_source;
 
 	options = add_common_options(builtin_multi_pack_index_repack_options);
 
@@ -396,11 +396,11 @@ static int cmd_multi_pack_index_repack(int argc, const char **argv,
 	if (argc)
 		usage_with_options(builtin_multi_pack_index_repack_usage,
 				   options);
-	source = handle_object_dir_option(the_repository);
+	packed_source = handle_object_dir_option(the_repository);
 
 	FREE_AND_NULL(options);
 
-	return midx_repack(source->dirs->packed, (size_t)opts.batch_size, opts.flags);
+	return midx_repack(packed_source, (size_t)opts.batch_size, opts.flags);
 }
 
 int cmd_multi_pack_index(int argc,
diff --git a/odb.c b/odb.c
index 9b70859c23..1dc8647159 100644
--- a/odb.c
+++ b/odb.c
@@ -348,32 +348,6 @@ out:
 	return ref_git;
 }
 
-struct odb_source *odb_find_source(struct object_database *odb, const char *obj_dir)
-{
-	struct odb_source *source;
-	char *obj_dir_real = real_pathdup(obj_dir, 1);
-	struct strbuf odb_path_real = STRBUF_INIT;
-
-	for (source = odb->sources; source; source = source->next) {
-		strbuf_realpath(&odb_path_real, source->path, 1);
-		if (!strcmp(obj_dir_real, odb_path_real.buf))
-			break;
-	}
-
-	free(obj_dir_real);
-	strbuf_release(&odb_path_real);
-
-	return source;
-}
-
-struct odb_source *odb_find_source_or_die(struct object_database *odb, const char *obj_dir)
-{
-	struct odb_source *source = odb_find_source(odb, obj_dir);
-	if (!source)
-		die(_("could not find object directory matching %s"), obj_dir);
-	return source;
-}
-
 static void fill_alternate_refs_command(struct repository *repo,
 					struct child_process *cmd,
 					const char *repo_path)
diff --git a/odb.h b/odb.h
index 3715351bb3..5c86572b5d 100644
--- a/odb.h
+++ b/odb.h
@@ -226,15 +226,6 @@ struct odb_fsck_options {
  */
 int odb_fsck(struct object_database *odb, struct odb_fsck_options *opts);
 
-/*
- * Find source by its object directory path. Returns a `NULL` pointer in case
- * the source could not be found.
- */
-struct odb_source *odb_find_source(struct object_database *odb, const char *obj_dir);
-
-/* Same as `odb_find_source()`, but dies in case the source doesn't exist. */
-struct odb_source *odb_find_source_or_die(struct object_database *odb, const char *obj_dir);
-
 /*
  * Replace the current writable object directory with the specified temporary
  * object directory and return the newly installed primary source. The former
diff --git a/odb/source-files.c b/odb/source-files.c
index 1f4cedaffa..e5e43b1543 100644
--- a/odb/source-files.c
+++ b/odb/source-files.c
@@ -967,6 +967,32 @@ static int odb_source_files_fsck(struct odb_source *source,
 	return ret;
 }
 
+struct odb_files_dir *odb_source_files_find_dir(struct object_database *odb, const char *obj_dir)
+{
+	char *obj_dir_real = real_pathdup(obj_dir, 1);
+	struct strbuf odb_path_real = STRBUF_INIT;
+	struct odb_files_dir *dir = NULL;
+	struct odb_source *source;
+
+	for (source = odb->sources; source; source = source->next) {
+		struct odb_source_files *files;
+
+		if (source->type != ODB_SOURCE_FILES)
+			continue;
+		files = odb_source_files_downcast(source);
+
+		strbuf_realpath(&odb_path_real, files->dirs->abspath, 1);
+		if (!strcmp(obj_dir_real, odb_path_real.buf)) {
+			dir = files->dirs;
+			break;
+		}
+	}
+
+	free(obj_dir_real);
+	strbuf_release(&odb_path_real);
+	return dir;
+}
+
 struct odb_source_files *odb_source_files_new(struct object_database *odb,
 					      const char *path,
 					      bool local)
diff --git a/odb/source-files.h b/odb/source-files.h
index 7f465853b1..77f4d842e0 100644
--- a/odb/source-files.h
+++ b/odb/source-files.h
@@ -72,4 +72,10 @@ static inline struct odb_source_files *odb_source_files_downcast(struct odb_sour
 	return container_of(source, struct odb_source_files, base);
 }
 
+/*
+ * Find "files" directory by its object directory path. Returns a `NULL`
+ * pointer in case the object directory could not be found.
+ */
+struct odb_files_dir *odb_source_files_find_dir(struct object_database *odb, const char *obj_dir);
+
 #endif
diff --git a/t/helper/test-read-midx.c b/t/helper/test-read-midx.c
index 3f4bafff61..88a79fdfc8 100644
--- a/t/helper/test-read-midx.c
+++ b/t/helper/test-read-midx.c
@@ -16,13 +16,13 @@ static struct multi_pack_index *setup_midx(const char *object_dir,
 					   struct odb_source_packed **out)
 {
 	struct odb_source_packed *packed;
-	struct odb_source *source;
+	struct odb_files_dir *dir;
 
 	setup_git_directory(the_repository);
 
-	source = odb_find_source(the_repository->objects, object_dir);
-	if (source) {
-		packed = odb_source_files_downcast(source)->dirs->packed;
+	dir = odb_source_files_find_dir(the_repository->objects, object_dir);
+	if (dir) {
+		packed = dir->packed;
 	} else {
 		packed = odb_source_packed_new(the_repository->objects,
 					       object_dir, false);