Authentication Issue Argo CD with Azure DevOps Server 2020 - Git Repo

Question

Environment:

I have the following scenario, I'm using Argo CD (v2.0.1+33eaf11) for deploying my kustomize config to a OKD Cluster, the config is hosted in a Git-Repo on the AzureDevOps 2020 (On premise). SSL Certs are present on all sides. (Successful tried out to do a git connect from the argo CD Instance to the AzureDevOps GitRepo).

The error I'm getting is:

• git did not exit cleanly (exit code 128) see https://stackoverflow.com/a/9980445/11473934

I've tried the following:

1. Creating a PAT in AzureDevops with read rights on the repo, also tried full access.

• On Argo CD, in the connect git-repo dialog i tried the following without success: (image from argocd homepage)
  1. Try:
     • Repository URL: https://theServer/<project>/_git/<repository>
     • Username: <username of PAT>
     • Password: <The PAT>
  2. Try:
     • Repository URL: https://theServer/<account>/<project>/_git/<repository>
     • Username: something - couldn't leave it blank
     • Password: <The PAT>
  3. Try:
     • Generating a SSH Key using it own booth sides, using SSH
     • Resulting in FATA[0000] unknown error: remote: Command git-upload-pack '******' is not in expected format.

Is there anyone how got a similar scenario up and running? What I'm looking for is some mechanism like Access Tokens. But I'm happy with every other working solution.

Created a issue on the argoCD github.