Unfortunately I already know the cause, just looking for repair options once the cause has been removed.Find the cause before fixing the symptoms
Its not hard to stitch the cracks using staginess helibars and a resin grout.
External & internal on a garage, big tall brown & green thing possibly the cause.if the cause has ceased rake out and re point then u haven't said if its external or internal
Deal with the big tall brown and green thing first it is usually done over a period of time reducing it a third each winter, people will think you are just trimming it.External & internal on a garage, big tall brown & green thing possibly the cause.
RonA
Be aware also that once you remove btb&g thing it doesn't mean that everything will stop moving straight away.