site etal\'e

Given a sheaf on a topological space, one can construct the espace etal\'e of that sheaf and recover the sheaf as the sheaf of sections. It would be nice if there were a similar construction for sites. Does anyone know how to do it? Allan Adler ara@altdorf.ai.mit.edu +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++