diff --git a/builtin/bundle.c b/builtin/bundle.c
index bfafadc984..5c6d8e1343 100644
--- a/builtin/bundle.c
+++ b/builtin/bundle.c
@@ -68,8 +68,8 @@ static int parse_options_cmd_bundle(int argc,
 }
 
 static int cmd_bundle_create(int argc, const char **argv, const char *prefix,
-			     struct repository *repo UNUSED) {
-	struct strvec pack_opts = STRVEC_INIT;
+			     struct repository *repo UNUSED)
+{
 	int progress = isatty(STDERR_FILENO);
 	int version = -1;
 	struct option options[] = {
@@ -92,16 +92,9 @@ static int cmd_bundle_create(int argc, const char **argv, const char *prefix,
 			builtin_bundle_create_usage, options, &bundle_file);
 	/* bundle internals use argv[1] as further parameters */
 
-	if (progress)
-		strvec_push(&pack_opts, "--progress");
-	else
-		strvec_push(&pack_opts, "--quiet");
-	strvec_push(&pack_opts, "--all-progress-implied");
-
 	if (!startup_info->have_repository)
 		die(_("Need a repository to create a bundle."));
-	ret = !!create_bundle(the_repository, bundle_file, argc, argv, &pack_opts, version);
-	strvec_clear(&pack_opts);
+	ret = !!create_bundle(the_repository, bundle_file, argc, argv, version, progress);
 	free(bundle_file);
 	return ret;
 }
diff --git a/bundle.c b/bundle.c
index a9330bf0d3..f55a521b2a 100644
--- a/bundle.c
+++ b/bundle.c
@@ -332,51 +332,52 @@ out:
 
 
 /* Write the pack data to bundle_fd */
-static int write_pack_data(int bundle_fd, struct rev_info *revs, struct strvec *pack_options)
+static int write_pack_data(int bundle_fd, struct rev_info *revs, int progress)
 {
-	struct child_process pack_objects = CHILD_PROCESS_INIT;
+	struct odb_generate_pack_options opts = ODB_GENERATE_PACK_OPTIONS_INIT;
+	struct odb_pack_generator *generator;
+	int ret = 0;
 	int i;
 
-	strvec_pushl(&pack_objects.args,
-		     "pack-objects",
-		     "--stdout", "--thin", "--delta-base-offset",
-		     NULL);
-	strvec_pushv(&pack_objects.args, pack_options->v);
+	opts.thin = 1;
+	opts.ofs_delta = 1;
+	if (progress)
+		opts.progress = ODB_GENERATE_PACK_PROGRESS_VERBOSE;
 	if (revs->filter.choice)
-		strvec_pushf(&pack_objects.args, "--filter=%s",
-			     list_objects_filter_spec(&revs->filter));
-	pack_objects.in = -1;
-	pack_objects.out = bundle_fd;
-	pack_objects.git_cmd = 1;
+		opts.filter_spec = list_objects_filter_spec(&revs->filter);
 
 	/*
-	 * start_command() will close our descriptor if it's >1. Duplicate it
-	 * to avoid surprising the caller.
+	 * The pack generator will consume our descriptor if it's >1.
+	 * Duplicate it to avoid surprising the caller.
 	 */
-	if (pack_objects.out > 1) {
-		pack_objects.out = dup(pack_objects.out);
-		if (pack_objects.out < 0) {
-			error_errno(_("unable to dup bundle descriptor"));
-			child_process_clear(&pack_objects);
-			return -1;
-		}
+	opts.pack_fd = bundle_fd;
+	if (opts.pack_fd > 1) {
+		opts.pack_fd = dup(bundle_fd);
+		if (opts.pack_fd < 0)
+			return error_errno(_("unable to dup bundle descriptor"));
 	}
 
-	if (start_command(&pack_objects))
-		return error(_("Could not spawn pack-objects"));
-
 	for (i = 0; i < revs->pending.nr; i++) {
 		struct object *object = revs->pending.objects[i].item;
 		if (object->flags & UNINTERESTING)
-			write_or_die(pack_objects.in, "^", 1);
-		write_or_die(pack_objects.in, oid_to_hex(&object->oid),
-			     revs->repo->hash_algo->hexsz);
-		write_or_die(pack_objects.in, "\n", 1);
+			oid_array_append(&opts.haves, &object->oid);
+		else
+			oid_array_append(&opts.wants, &object->oid);
 	}
-	close(pack_objects.in);
-	if (finish_command(&pack_objects))
-		return error(_("pack-objects died"));
-	return 0;
+
+	if (odb_generate_pack(revs->repo->objects, &generator, &opts)) {
+		ret = error(_("Could not spawn pack-objects"));
+		goto out;
+	}
+
+	if (odb_pack_generator_finish(generator)) {
+		ret = error(_("pack-objects died"));
+		goto out;
+	}
+
+out:
+	odb_generate_pack_options_release(&opts);
+	return ret;
 }
 
 /*
@@ -485,7 +486,7 @@ static void write_bundle_prerequisites(struct commit *commit, void *data)
 }
 
 int create_bundle(struct repository *r, const char *path,
-		  int argc, const char **argv, struct strvec *pack_options, int version)
+		  int argc, const char **argv, int version, int progress)
 {
 	struct lock_file lock = LOCK_INIT;
 	int bundle_fd = -1;
@@ -594,7 +595,7 @@ int create_bundle(struct repository *r, const char *path,
 	}
 
 	/* write pack */
-	if (write_pack_data(bundle_fd, &revs_copy, pack_options)) {
+	if (write_pack_data(bundle_fd, &revs_copy, progress)) {
 		ret = -1;
 		goto out;
 	}
diff --git a/bundle.h b/bundle.h
index d664b2f2d6..471da23d1b 100644
--- a/bundle.h
+++ b/bundle.h
@@ -27,8 +27,7 @@ int read_bundle_header(const char *path, struct bundle_header *header);
 int read_bundle_header_fd(int fd, struct bundle_header *header,
 			  const char *report_path);
 int create_bundle(struct repository *r, const char *path,
-		  int argc, const char **argv, struct strvec *pack_options,
-		  int version);
+		  int argc, const char **argv, int version, int progress);
 
 enum verify_bundle_flags {
 	VERIFY_BUNDLE_VERBOSE = (1 << 0),