What is this schematic symbol?
As you might know in KiCAD the schematic symbols and the footprints are not coupled. 

In order to recreate it use "conn_01x01" symbol in the schmatic editor(Eeschema). You can change its value to "PH_A". This symbol represents a single pin component, but it can be anything you want. You should refer to the pcb file of the attached project and search for "PH_A".