I would like to retain (for now) the ability to link Git changesets to workitems stored in TFS.
I already wrote a tool (using a hook from Git) in which I can inject workitem identifiers into the message of a Git changeset.
I would also like to store the hash of the Git commit in a custom TFS workitem field. This way I can examine a workitem in TFS and see what Git changesets are associated with the workitem.
How can I easily retrieve the hash from the current commit from Git?