When running ./blender/build_files/build_environment/install_deps.sh on Ubuntu 20.04.3 LTS the following error can be seen:
./blender/build_files/build_environment/install_deps.sh: line 1266: [: too many arguments
This error results from the call:
check_package_version_ge_DEB $CLANG_FORMAT $CLANG_FORMAT_VERSION
with CLANG_FORMAT_VERSION being undefined.
Also as clang-format 13 is already released and hopefully didn't break anything CLANG_FORMAT_VERSION_MEX could use version bump.