2 threads from a search:
https://forum.freecapitalists.org/t/sraffa-vs-hayek/6809
https://forum.freecapitalists.org/t/austrian-responses-to-sraffa/14392
And a daily by RPM, although that one doesn’t mention any hayek/sraffa connection:
And a short article by Ludwig Lachmann:
https://direct.mises.org/misesreview_detail.aspx?control=38
And one by Garrison:
http://www.auburn.edu/~garriro/garrison.pdf
I read some of what I think the OP refers to, but I can’t even tell what Hayek and Sraffa were disagreeing about, or even if they were in disagreement. It’s at times like these that economists should start throwing pies around, to show the world that serious intellectual business is being conducted.