[A930Rocket]

There's no way to patch that IMHO. As suggested, bust it out and replace it. Use 1/4's for forms and pour against your existing concrete. Use a 1/2" back against hard surfaces to help with expansion and contraction (at the brick). Most concrete co's have a minimum amount of concrete they'll ship, unles you can piggy back on someone else. I use 65 SF per yard (although a SY should yield 81 SF). Call around and get minimum delivery and pricing.

Don't even try to Sakrete it and don't fill the wheelbarrow up with concrete. You'll pop a cod trying to lift it. If you have access to a Bobcat or what I call a Georgia Buggy, it will be a lifesaver.