Lack of visibility during Git sync

[exalate-issue-sync]

h3. As a user

I want to have easy to understand error messages if there are problems with the git sync
So that I troubleshoot issues easier than I can today.

h3. Description

Currently error reporting when syncing git repositories is lacking. We need to raise the bar here and correctly report errors that are actionable.

As this issue is a bit vague a first task might be to setup some scenarios where the sync might fail and try to import repositories under these conditions to figure out what might go wrong.

This could include but is not limited to, invalid GraphQL queries, invalid Python transform files. Transforms that can’t be imported due to missing modules. Issues with artifact definition imports due to lack of targets.

Git credential issues, file level permissions, out of disk space on git-agent

h3. Acceptance Criteria

When a repository fails to sync. Then there should be easy to understand errors that are reported back for the majority of error conditions.