TFE Workspace and Azure DevOps git tags


I am trying to configure a TFE Workspace to use an Azure DevOps repo’s tag and not a branch.

When I configure the Workspace’s branch to be refs/tags/TagTestingv1.0 TFE throws an error saying the Branch doesnt exist.

According to the Azure DevOps API doco for tags though the above prefixing IS the correct path to refer to an Azure DevOps repo’s tag. Annotated Tags - Get (Azure DevOps Git) | Microsoft Docs

Has anyone got this to work?