unsigned long size;
        enum object_type type;
 
-       buf = read_sha1_file(get_object_hash(obj->object), &type, &size);
+       buf = read_sha1_file(obj->object.oid.hash, &type, &size);
        if (!buf)
                return -1;
        if (type != OBJ_BLOB) {
                        return NULL;
                if (!our)
                        our = their;
-               return read_sha1_file(get_object_hash(our->object), &type, size);
+               return read_sha1_file(our->object.oid.hash, &type, size);
        }
 
        if (fill_mmfile_blob(&f1, our) < 0)