Fetching app sources fails for Azure DevOps on-prem git repo

[DanielGreguric]

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• I confirm I have searched the Docs, Codemagic Sample Projects, and GitHub Discussions.
• I confirm the software versions on my local computer match the ones in CI environment (e.g. Xcode version, Gradle version). See here
• I confirm I am able to do a fresh clone of the repository and build the project on my local computer.

Which mobile framework are you using?

Flutter (Dart)

Steps to reproduce

1. Set Repository access settings for Azure DevOps Server (On-Prem) git repo with domain user and pass
2. Run any workflow and see "Fetch app sources" step fails with "The requested URL returned error: 500"

Note, Azure DevOps Services (cloud version) has "Generate Git Credentials" option on git repo, while Azure DevOps Server (on-prem) doesn't. I was able to fetch sources normally from the cloud version, but can't get it to work from on-prem.

Expected results

I expect that codemagic pulls the git repo from our Azure DevOps Server (on-prem) project

Actual results

Fetching app sources
== Cloning repository https://our.org.dom/tfs/DefaultCollection/ADOProject/_git/ADOGITREPO for main ==

/usr/bin/git clone --progress --branch main --depth 50 https://[email protected]/tfs/DefaultCollection/ADOProject/_git/ADOGITREPO /Users/builder/clone
Cloning into '/Users/builder/clone'...
fatal: unable to access 'https://our.org.dom/tfs/DefaultCollection/ADOProject/_git/ADOGITREPO/': The requested URL returned error: 500

Build failed :|
Failed to clone repository

Build id (optional)

66df0ae903c3609f072ad5d0

[dam-ease]

Hello @DanielGreguric.
The buildID shared seems to be for a build over 30 days ago as I am unable to view logs for this build. Are you still running into this issue?
If yes, kindly share the buildID to a recent build with this error.
Also, if this is a privately hosted repository please confirm that you have whitelisted IP addresses from:
https://docs.codemagic.io/getting-started/adding-apps/#firewall-configuration-for-privately-hosted-repositories