I wanna say that Abseil's hash function does something like this? It was a couple of years ago, but I remember tearing my hair out figuring out why hash tables passed from a C++ api to my tests were failing. Turns out, the tests and the API was compiled by my build system as separate libraries and dynamically linked, and that abseil seeded their hash function with the address of a dummy global variable (which had a different location in the main program and the tests).

Presumably because they didn't want people to depend on the value of the hash function because of Hyrum's Law, but that meant the hash tables couldn't be passed across a DLL boundary, which seemed like an insane tradeoff to me. But hey, I'm not google, I get why they would do it.