memcpy(new->old_sha1, sha1, 20);
memmove(convert + pos + 1, convert + pos, (nr_convert - pos) * sizeof(struct entry *));
convert[pos] = new;
memcpy(new->old_sha1, sha1, 20);
memmove(convert + pos + 1, convert + pos, (nr_convert - pos) * sizeof(struct entry *));
convert[pos] = new;