I don't know of any article, but I did a search on Pubmed.
There's several studies that found a positive correlation between sex hormone binding globulin (SHBG) and fiber intake. Higher SHBG would leave less testosterone available for use.
Most of those studies didn't independently test fiber, they tested low fat/high fiber, and thier main interest was prostate or breast cancer.
This 21-year old article comes closest to what your asking about.