return fmt.Errorf("revision is shorter than canonical (expected %s)", info.Short)
		default:
			return fmt.Errorf("does not match short name of revision (expected %s)", info.Short)
		}
	}

	t, err := module.PseudoVersionTime(version)
	if err != nil {
		return err
	}
	if !t.Equal(info.Time.Truncate(time.Second)) {