I kept the same suit for six years and the same dialogue. They just changed the title of the picture and the leading lady.

Meaning of the quote

Robert Mitchum, an American actor, is saying that even though the movies he made had different titles and leading actresses, the core of the story and his character remained the same. He wore the same clothes and used the same lines, even though the movie was presented as something new. This suggests that sometimes Hollywood recycles the same basic ideas and stories, just with different packaging.