Interesting! Is this also in your CD file where you use databricks bundle deploy? It looks similar to my env part, although you're using AZURE_SP_ variables. I suppose they're also used to make the connection to Databricks?

Also, did you specify somewhere how your SP can make contact with the repo, i.e. via Settings -> Identity and access (workspace admin) -> Service principals (manage), and then via the Git integration tab of your SP?