Not Science Fiction
Bet your ass this is real and this was made in 1978.
How long do you suppose they had actually been doing this cloning?
IMDB:
https://www.imdb.com/title/tt0077269/?ref_=nv_sr_srsg_0
A Nazi hunter in Paraguay discovers a sinister and bizarre plot to rekindle the Third Reich.
Director: Franklin J. Schaffner
Writers: Ira Levin (novel), Heywood Gould (screenplay)
Stars: Gregory Peck, Laurence Olivier, James Mason