Five years ago, James Cameron did a mockumentary about the alleged discovery of Jesus’ tomb (i.e. the Talpiot Tomb), only the tomb wasn’t empty after all! This contention was shot down by scholars like Richard Bauckham.
However, I’d like to make another point. The unbeliever is arguing that if we found a tomb containing the remains of Jesus, that would disprove the Resurrection of Christ, and thereby falsify the Christian faith.
In that ironic connection, atheist Jeff Lowder has argued that the corpse of Jesus would rapidly become unrecognizable, so that even if his tomb was occupied, it would be impossible to identify the remains. I myself have responded to that argument.
However, my immediate point is not to assess either one of these anti-Christian arguments, but to simply point out that they cancel each other out. And in that respect, the onus is not on Christians to refute mutually contradictory objections to the Christian faith–for the unbelievers are busy refuting each other.