This is xnu-12377.1.9. See this file in:
Directory listing for xnu-12377.1.9//tools
Makefile
cocci/
cred_dump_backtraces.c
cred_dump_creds.c
entropy_health_test_bounds.py
format_vm_parameter_validation.py
kt-dump/
lldbmacros/
lockstat/
pre-commit.sh
remote_build.sh
symbolify.py
syscall_map.lua
tests/
trace/
vm_sanitize_enforcement.py
xcrun_cache.sh