Would you like to move from adobe managed git in cloud manager to self managed git repository? Adobe cloud manager is now running program where we could directly integrate any git repository to cloud manager. When you will open cloud manager, it will ask to opt this feature with a request form.
You will see below form in cloud manager to opt the feature of using direct git repo.
References
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/implementing/using-cloud-manager/managing-code/integrating-with-git.html