Upstream tcpdump doesn't have pfsync support at all. It was briefly merged back in 2012, but immediately backed out again:
Author: Guy Harris <firstname.lastname@example.org>
Date: Wed Feb 29 21:14:50 2012 -0800Back out DLT_PFSYNC support. Unfortunately, the DLT_PFSYNC support depends on header files included from the pfctl command's source tree, and trying to arrange to find that would be too much trouble.