Similar to #138061 in Fedora, we have found out that the digest in JIT stencils in 3.15.0a2 differs. (Clarification edit: This is not a new bug in a2, we merely have not discovered it before.) Due to ...

It states The file descriptor is not inherited by child processes. However, taking a look through https://github.com/python/cpython/blob/main/Lib/tempfile.py there ...