Exact pybind11 commit PyTorch 1.9.0 was built against

Hi Everyone,

I am getting a runtime error with my JIT/ATen code that seems to indicate that the pybind11 version that I am building against is not the correct one that PyTorch 1.9 was built against.
I am struggling to find any information on where to find the pybind11 version used, can anyone help please?

Many thanks and with best wishes

Christian

This is the currently tagged pybind11 version:

(you can find it here)