I was recently trying to optimize my shell startup time, and I noticed that zsh --version said that it was x86-64, while bash --version reported (correctly) that bash was running on aarch64. file $(which zsh) and file $(which bash) reported, also correctly, that the binaries themselves were universal, i.e. they were fat binaries that could run on both architectures.

https://app.warp.dev/block/MTGSgjtWRoNMNrWZq1FRhB

I’m not sure why this happens, but others seem to be having this issue too.