I will presume you are asking about the Talpiot Tomb. The short answer is that the Church has nothing to say about such matters. As Catholics we believe that Jesus was crucified, suffered death, was burred, rose on the third day and ascended into heaven. While the Church has nothing to fear from honest investigations into history and science, She also has no need to respond to every challenge to the faith.
It should be kept in mind that the name “Jesus” was very common in the first century AD and the tomb in question has many more questions about it than answers. If historians and archeologists can’t agree on what it contains or means, then the Church has no reason to comment other than to eternally profess our Creed.
