Due to changes in how echo and phasing work since Old Fogey was originally printed, echo mostly does nothing in this case. This is, as they say, a bit weird. Old Fogey is phased out when its echo ability would trigger, so that ability doesn’t trigger at the beginning of the upkeep after Old Fogey enters the battlefield. Phasing in doesn’t cause Old Fogey to enter the battlefield, so echo ends up not really doing much at all.