git_client.create_repository() Failing with msrest.exceptions.SerializationError

I am trying to create a git repository using the azure devops python module.

Here is the script I am using

personal_access_token = 'xxxxxxxxxxxxxxxxxx'
org_url = 'https://dev.azure.com/xxxxxxxxxxxxxxxxxxxxs'
project_name = 'testProject'

credentials = BasicAuthentication('', personal_access_token)
connection = Connection(base_url=org_url, creds=credentials)

git_client = connection.clients.get_git_client()

git_client.create_repository("repotest", project=project_name, source_ref=None)

The create_repository command is failing with the following error:

Traceback (most recent call last):
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1428, in _deserialize
    found_value = key_extractor(attr, attr_desc, data)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1193, in rest_key_case_insensitive_extractor
    return attribute_key_case_insensitive_extractor(key, None, working_data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1222, in attribute_key_case_insensitive_extractor
    return data.get(found_key)
           ^^^^^^^^
AttributeError: 'str' object has no attribute 'get'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 620, in body
    data = deserializer._deserialize(data_type, data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1446, in _deserialize
    raise_with_traceback(DeserializationError, msg, err)
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\exceptions.py", line 51, in raise_with_traceback
    raise error.with_traceback(exc_traceback)
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1428, in _deserialize
    found_value = key_extractor(attr, attr_desc, data)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1193, in rest_key_case_insensitive_extractor
    return attribute_key_case_insensitive_extractor(key, None, working_data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1222, in attribute_key_case_insensitive_extractor
    return data.get(found_key)
           ^^^^^^^^
msrest.exceptions.DeserializationError: Unable to deserialize to object: type, AttributeError: 'str' object has no attribute 'get'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\test.py", line 47, in <module>
    git_client.create_repository("infratest", project=project_name, source_ref=None)
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\azure\devops\v7_0\git\git_client_base.py", line 2986, in create_repository
    content = self._serialize.body(git_repository_to_create, 'GitRepositoryCreateOptions')
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 622, in body
    raise_with_traceback(
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\exceptions.py", line 51, in raise_with_traceback
    raise error.with_traceback(exc_traceback)
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 620, in body
    data = deserializer._deserialize(data_type, data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1446, in _deserialize
    raise_with_traceback(DeserializationError, msg, err)
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\exceptions.py", line 51, in raise_with_traceback
    raise error.with_traceback(exc_traceback)
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1428, in _deserialize
    found_value = key_extractor(attr, attr_desc, data)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1193, in rest_key_case_insensitive_extractor
    return attribute_key_case_insensitive_extractor(key, None, working_data)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\<user>\Documents\PycharmProjects\projectCreation\venv\Lib\site-packages\msrest\serialization.py", line 1222, in attribute_key_case_insensitive_extractor
    return data.get(found_key)
           ^^^^^^^^
msrest.exceptions.SerializationError: Unable to build a model: Unable to deserialize to object: type, AttributeError: 'str' object has no attribute 'get', DeserializationError: Unable to deserialize to object: type, AttributeError: 'str' object has no attribute 'get'

Reproduce the provided script and inspect the create_repository entry point in azure/devops/v7_0/git/git_client_base.py around line 2986, then trace the model serialization failure through msrest/serialization.py. Done means the same repository-creation call completes without the reported SerializationError; no test file is identified in the issue.