libgit2sharp is agnostic of GitHub Personal Access Token related errors

Introduction

It's been a while since github deprecated the use of password on CLIs and applications. Personal access token is the way to get authenticated on these apps. libgit2sharp is quiet on errors and warnings pertinent to PATs.

For example,
access tokens can be created with only repository access. Which is restricted to do modifications outside the repository i.e., workflows, wikis and projects. Hence, trying to modify a workflow file using this token should outcome an access exception.

However, libgit2sharp behaves as if nothing happened when that event does occur. Nothing is performed, push fails, however, there is no error/warning report from libgit2sharp.

Reproduction steps

Create a PAT with only repository access. Now try to push a commit that modifies a workflow file.

Expected behavior

Show throw an exception or report an error.

Actual behavior

Does not throw an exception, behaves as if push was successful. However, push actually failed.

to mimic the behavior of git, behavior of libgit2sharp should look like following,

I created an example commit that modified following github workflow file: D:\Code\MyBlog\.github\workflows\deploy.yml

git properly reports the error,

$ git push origin dev
Enumerating objects: 17, done.
Counting objects: 100% (17/17), done.
Delta compression using up to 16 threads
Compressing objects: 100% (6/6), done.
Writing objects: 100% (9/9), 804 bytes | 268.00 KiB/s, done.
Total 9 (delta 4), reused 0 (delta 0), pack-reused 0
remote: Resolving deltas: 100% (4/4), completed with 4 local objects.
To https://github.com/matrix/blog.git
 ! [remote rejected] dev -> dev (refusing to allow a Personal Access Token to create or update workflow `.github/workflows/deploy.yml` without `workflow` scope)
error: failed to push some refs to 'https://github.com/matrix/blog.git'

Version of LibGit2Sharp (release number or SHA1)

Latest

Operating system(s) tested; .NET runtime tested

Win 10, net sdk: 6.0.101

Reproduce the push against a repository using a PAT without workflow scope, modifying .github/workflows/deploy.yml, and compare the result with the Git command shown in the issue. Trace the push operation and its reported errors in the libgit2sharp source; done means a rejected workflow push raises an exception or reports the remote error instead of appearing successful.