Based on information posted by experts on this forum, the fig plants do not adapt from location to location irrespective of time duration as you are thinking i.e. adapt to shortened duration of ripening by needing less cumulative heat-units to ripen. However, creating a micro-climate for providing more heast-units from the time of fig embriyo formation until ripening can make difference. Also, as the tree is maturing in years you may see some difference of early ripening until it is fully mature and settles down on its normal calendar for mature tree if other conditions of weather remain constant i.e. cooler summers in the same location may cause it to need extra time for ripening even at mature stage.