Print repository ID after opening

cmd/restic/global.go

@@ -355,7 +355,11 @@ func OpenRepository(opts GlobalOptions) (*repository.Repository, error) {
 	}
 
 	if stdoutIsTerminal() {
-		Verbosef("password is correct\n")
+		id := s.Config().ID
+		if len(id) > 8 {
+			id = id[:8]
+		}
+		Verbosef("repository %v opened successfully, password is correct\n", id)
 	}
 
 	if opts.NoCache {