the most strange Hirschfänger I ever saw https://auctionet.com/de/3419258-golok-cipacing-java-markiert-1904-auf-ti-patjing

don't know if this was done original in 1904 or was a later gimmick by a funny chap but here the blade of an malayan golok blade https://en.wikipedia.org/wiki/Golok
was mated with a Hirschfänger grip.
think its not impossible that a native swordsmith got this european made grip parts into his hands and decide to use it.