Create new git branch: azure.devops.exceptions.AzureDevOpsClientRequestError: The requested resource does not support http method 'PATCH'

Background:

I'm using the azure-devops-python-api - library in order to programmatically push a commit to my Azure DevOps organization (git) repository.

The Azure DevOps REST API docs for "Update - Ref" did not help me to figure out the solution.
This discussion did not help me either.

Problem:

"The requested resource does not support http method 'PATCH'" when calling update_ref() in module azure\devops\released\git\git_client_base.py.

There is no obvious function for creating a branch, which would be called create_branch() according to the principle of least surprise.
As opposed to this Azure DevOps API, this is much more intuitively resolved in e.g. the AWS CodeCommit API.

Anyways, I would like understand what exactly goes wrong here.
The error message is very generic, I could not determine which of the inputs are the problem.

Even when I provide the filter - argument instead of being None to the target or source branch name, it throws the following error:

azure.devops.exceptions.AzureDevOpsServiceError: The only property which can be patched is isLocked.

For the sake of completeness, the short docstring of filter from the above-mentioned module:

:param str filter: The name of the branch to lock/unlock

I would also be greatful for any other way of simply creating a new branch which does not exist.

Source Code:

The code involved until invoking the git_client.update_ref() - method, is:

from azure.devops.v5_1.git.models import (
    GitRefUpdate,
)
from azure.devops.connection import Connection


release_head_commit_id = '12312314123123123213123123123'
project_name = 'project_x'
repo_name = 'project_x'
release_branch_name = 'target-branch'
feature_branch_name = 'feature-branch'
git_client = Connection(base_url=organization_url, creds=credentials).clients.get_git_client()

filter_name = None  # or feature_branch_name or release_branch_name alternatively

git_client.update_ref(
                GitRefUpdate(
                    is_locked=False,
                    name=feature_branch_name,
                    new_object_id=release_head_commit_id,
                    old_object_id='0' * 40,
                    repository_id=repo_name,
                ),
                repo_name,
                filter_name ,
                project=project_name,
                project_id=project_name,
            )

The old_object_id='0' * 40 was set like this based on this comment.

azure/devops/released/git/git_client_base.py とエントリーポイント update_ref() から始め、リンクされた Azure DevOps REST API のドキュメントと、提供されている GitRefUpdate 呼び出しを確認します。ブランチの作成がこのメソッドでサポートされているのか、それとも別の API パスが必要なのかを判断し、結果として有効な入力またはクライアントに不足している機能を文書化します。