Pre-commit hook compatibility

My company now requires the use of a detect-secrets tool and a pre-commit step.
After following the instructions and attempting to push a commit, it failed with the following:

```
Commit failed - exit code 1 received, with output: '[WARNING] Unstaged files detected.
[INFO] Stashing unstaged files to /Users/iadar/.cache/pre-commit/patch1546236539.
[INFO] Initializing environment for git@github.****.com:****/****-detect-secrets.
[INFO] Restored changes from /Users/iadar/.cache/pre-commit/patch1546236539.
An unexpected error has occurred: CalledProcessError: Command: ('/Applications/GitHub Desktop.app/Contents/Resources/app/git/libexec/git-core/git', 'submodule', 'update', '--init', '--recursive')
Return code: 1
Expected return code: 0
Output: (none)
Errors:
/Applications/GitHub Desktop.app/Contents/Resources/app/git/libexec/git-core/git-sh-setup: line 46: //libexec/git-core/git-sh-i18n: No such file or directory

Check the log at /Users/iadar/.cache/pre-commit/pre-commit.log'
```

The log file shows:
```
An unexpected error has occurred: CalledProcessError: Command: ('/Applications/GitHub Desktop.app/Contents/Resources/app/git/libexec/git-core/git', 'submodule', 'update', '--init', '--recursive')
Return code: 1
Expected return code: 0
Output: (none)
Errors:
/Applications/GitHub Desktop.app/Contents/Resources/app/git/libexec/git-core/git-sh-setup: line 46: //libexec/git-core/git-sh-i18n: No such file or directory

Traceback (most recent call last):
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/error_handler.py", line 47, in error_handler
yield
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/main.py", line 261, in main
return run(runner, store, args)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/commands/run.py", line 256, in run
for _, hook in repo.hooks:
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/cached_property.py", line 35, in __get__
value = obj.__dict__[self.func.__name__] = self.func(obj)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/repository.py", line 162, in hooks
if hook['id'] not in self.manifest_hooks:
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/cached_property.py", line 35, in __get__
value = obj.__dict__[self.func.__name__] = self.func(obj)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/repository.py", line 155, in manifest_hooks
repo_path = self.store.clone(repo, rev)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/store.py", line 149, in clone
return self._new_repo(repo, ref, deps, clone_strategy)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/store.py", line 125, in _new_repo
make_strategy(directory)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/store.py", line 147, in clone_strategy
_git_cmd('submodule', 'update', '--init', '--recursive')
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/store.py", line 144, in _git_cmd
return cmd_output('git', *args, cwd=directory, env=env)
File "/Users/iadar/Library/Python/2.7/lib/python/site-packages/pre_commit/util.py", line 186, in cmd_output
returncode, cmd, retcode, output=(stdout, stderr),
CalledProcessError: Command: ('/Applications/GitHub Desktop.app/Contents/Resources/app/git/libexec/git-core/git', 'submodule', 'update', '--init', '--recursive')
Return code: 1
Expected return code: 0
Output: (none)
Errors:
/Applications/GitHub Desktop.app/Contents/Resources/app/git/libexec/git-core/git-sh-setup: line 46: //libexec/git-core/git-sh-i18n: No such file or directory
```

I don't know if the problem is on the GitHub Desktop 1.5.2 beta 0 side, the pre-commit side, the Git side or the Python side. Any clues to resolve this will be much appreciated.