func IsZeroPseudoVersion(v string) bool {
	return v == ZeroPseudoVersion(semver.Major(v))
}

// PseudoVersionTime returns the time stamp of the pseudo-version v.
// It returns an error if v is not a pseudo-version or if the time stamp
// embedded in the pseudo-version is not a valid time.
func PseudoVersionTime(v string) (time.Time, error) {
	_, timestamp, _, _, err := parsePseudoVersion(v)
	if err != nil {

			var (
				ft time.Time
			)
			if len(f) >= 2 {
				ft, _ = time.Parse(time.RFC3339, f[1])
			} else if module.IsPseudoVersion(f[0]) {
				ft, _ = module.PseudoVersionTime(f[0])
			} else {
				// Repo.Latest promises that this method is only called where there are
				// no tagged versions. Ignore any tagged versions that were added in the
				// meantime.
				continue
			}

			// an unsuccessful fix in v1.0.1, in which case the v1.0.2 commit may be
			// older than the v1.0.1 commit despite the tag itself being newer.)
			currentTime, err := module.PseudoVersionTime(current)
			if err == nil && rev.Time.Before(currentTime) {
				if err := allowed(ctx, module.Version{Path: path, Version: current}); errors.Is(err, ErrDisallowed) {
					return revWithOrigin(nil), err
				}

			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)) {