public void Verify(string revision, IMessageSubscriber subscriber)
{
this.revision = revision;
var revisionHashLength = "280bb4850c149a0a33412093cba5d22b4d10bff4".Length;
if (revision.Length == revisionHashLength && Regex.Match(revision, "[0-9a-fA-F]*").Success)
{
subscriber.Published(string.Format("Revision number is a valid Git hash."));
subscriber.Ask("Pull this revision? (Y/N)", this);
}
}