+ /*
+ * The fast-import stream of a remote helper that advertises
+ * the "refspec" capability writes to the refs named after the
+ * right hand side of the first refspec matching each ref we
+ * were fetching.
+ *
+ * (If no "refspec" capability was specified, for historical
+ * reasons we default to *:*.)
+ *
+ * Store the result in to_fetch[i].old_sha1. Callers such
+ * as "git fetch" can use the value to write feedback to the
+ * terminal, populate FETCH_HEAD, and determine what new value
+ * should be written to peer_ref if the update is a
+ * fast-forward or this is a forced update.
+ */