The ruling on one who missed the first bowing of the first unit of the eclipse prayer

If one misses the first bowing of the first unit in the eclipse prayer, does he make it up?
He makes up the entire unit. In the eclipse prayer, there are two bowings in each unit, and the bowing that allows one to catch up with the unit is the first bowing. As for the second bowing, it does not allow one to catch up with the unit, based on the saying of the Prophet (peace and blessings be upon him and his family): “Pray what you catch up with, and complete what you missed.” And he must pray a complete unit with its two bowings after the imam concludes the prayer.