Force the identity test suite to run as a pre-commit hook when editing
files from that directory.
This can take ~1s for a dirty repository, up to ~40s for a clean build.
`bash -c` had to be used, because it looks like they fork + exec the command, which means that you need a valid interpreter as the command. `cd` is just a shell builtin and only exists in the context of an interpreter shell.
https://linear.app/comm/issue/ENG-1813