Graph API support getting changes for SiteGroup

The current Graph API version doesn't support an endpoint to get the SiteGroup resources of SharePoint or OneDrive (https://docs.microsoft.com/en-us/previous-versions/office/sharepoint-csom/ee539927(v=office.15)).

Please, provide the endpoint to get whole SiteGroups of a site and to get only changes of a site by ChangeToken like for items https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/synchronize-sharepoint-items-using-the-rest-service