diff --git a/reset.c b/reset.c
index 4bea758053b..79310ae071b 100644
--- a/reset.c
+++ b/reset.c
@@ -21,7 +21,7 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action,
 	struct object_id head_oid;
 	struct tree_desc desc[2] = { { NULL }, { NULL } };
 	struct lock_file lock = LOCK_INIT;
-	struct unpack_trees_options unpack_tree_opts;
+	struct unpack_trees_options unpack_tree_opts = { 0 };
 	struct tree *tree;
 	const char *reflog_action;
 	struct strbuf msg = STRBUF_INIT;
@@ -49,7 +49,6 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action,
 	if (refs_only)
 		goto reset_head_refs;
 
-	memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
 	setup_unpack_trees_porcelain(&unpack_tree_opts, action);
 	unpack_tree_opts.head_idx = 1;
 	unpack_tree_opts.src_index = r->index;
@@ -134,6 +133,7 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action,
 leave_reset_head:
 	strbuf_release(&msg);
 	rollback_lock_file(&lock);
+	clear_unpack_trees_porcelain(&unpack_tree_opts);
 	while (nr)
 		free((void *)desc[--nr].buffer);
 	return ret;