void add_name_decoration(enum decoration_type type, const char *name, struct object *obj);
const struct name_decoration *get_name_decoration(const struct object *obj);
-struct commit *lookup_commit(const struct object_id *oid);
+#define lookup_commit(r, o) lookup_commit_##r(o)
+struct commit *lookup_commit_the_repository(const struct object_id *oid);
#define lookup_commit_reference(r, o) \
lookup_commit_reference_##r(o)
struct commit *lookup_commit_reference_the_repository(const struct object_id *oid);