A single character indicating the status of the ref:
(space);; for a successfully fetched fast-forward;
`+`;; for a successful forced update;
-`x`;; for a successfully pruned ref;
-`-`;; for a successful tag update;
+`-`;; for a successfully pruned ref;
+`t`;; for a successful tag update;
`*`;; for a successfully fetched new ref;
`!`;; for a ref that was rejected or failed to update; and
`=`;; for a ref that was up to date and did not need fetching.