No chmod of entire directory esp. .git/ when cross-compiling

Get:

.. [Release] Triggering OCaml build_cross because /work/build/DkSDKFiles/cfg-Release/o/opt/mlcross/android_x86_64/bin/ocaml does not exist
-- .. Running: /work/build/DkSDKFiles/sb/with-dksdk-target-abi.e45a5a5c.Release.env.sh /work/build/DkSDKFiles/with-unix.sh  sh -c /work/build/DkSDKFiles/cfg-Release/o/share/dkml/repro/100co/vendor/dkml-compiler/src/r-c-ocaml-3-build_cross-noargs.sh
[2024-11-22T09:43:11+00:00] genWrapper
[2024-11-22T09:43:11+00:00] genWrapper
[2024-11-22T09:43:11+00:00] /usr/bin/chmod
/usr/bin/chmod: changing permissions of './.git/objects/61/a9d793fd254829dbfc97bf30e84ad46da7b280': Permission denied
...
/usr/bin/chmod: changing permissions of './.git/objects/25/8e6d4977dc46a213b9ad1a683ce0b78a2d7704': Permission denied
CMake Error at fetch/dksdk-cmake/cmake/targets/115-ocaml-config/core.cmake:85 (execute_process):
  execute_process error getting child return code: No such file or directory
Call Stack (most recent call first):
  fetch/dksdk-cmake/cmake/targets/115-ocaml-config/core.cmake:100 (find_ocaml_config_var)
  fetch/dksdk-cmake/cmake/targets/115-ocaml-config/CMakeLists.txt:24 (include)

inside a macOS Docker container.

Author: jonahbeckford

src/r-c-ocaml-3-build_cross.sh

@@ -353,10 +353,6 @@ build_world() {
   # shellcheck disable=SC2086
   log_trace genWrapper "$build_world_BUILD_ROOT/support/ocamloptTarget.wrapper" "$build_world_BUILD_ROOT"/support/with-target-c-compiler.sh "$OCAMLSRC_MIXED"/support/with-linking-on-host.sh "$build_world_BUILD_ROOT/ocamlopt.opt$build_world_TARGET_EXE_EXT" -I "$build_world_BUILD_ROOT/stdlib" -I "$build_world_BUILD_ROOT/otherlibs/unix" -nostdlib
 
-  # macOS, and probably Windows, don't like the way the next `make clean` removes read-only files.
-  # would get ... rm: Debug/dksdk/ocaml/opt/mlcross/darwin_x86_64: Permission denied
-  log_trace "$DKMLSYS_CHMOD" -R u+w .
-
   # clean (otherwise you will 'make inconsistent assumptions' errors with a mix of host + target binaries)
   make clean