Need help with patching my block garage.

Hello , so my garage needs patchwork because the corners have spalled. I just wanted to ask your opinions on what I should use to patch this type of block work located in Nyc. Mortar or rapid set cement product?

There was a stucco applied to the blocks and it was painted. I have a picture attached of my neighbors garage which is how the blocks look without paint.

Any feedback would be greatly appreciated. Thanks, George