You should have no problem with winter hardiness, though you could have planted the cloves a little deeper. Of more concern is the grass coming back with a vengeance in spring. You can fix both problems with a deep mulch. I love to use the mixture of grass clippings/chopped leaves I can pick up with the mower this time of year.

I work with S&H Silverskin (originally from Southern Exposure) and noticed yesterday and some of the plants are showing a leaf. The ground here freezes solid for a couple of months, but a lot of times the green growth on the softnecks persists anyway. The hardnecks usually don't show until spring.

Planatus:

When you pick up the grass clippings and leaves with the mower, do you put them directly on the garlic patch or do you compost them and place them on the patch after composting?

Yes, spread the mulch over the planted area 3-4 inches deep -- it will pack down. This picture is last year's softnecks in midwinter -- the shoots had no trouble pushing up through the leaf/grass clipping mulch.

The wire arch keeps deer, dogs and chickens from making a mess.

The mulch has to be fine enough (chopped). Do not put 3-4" leaves directly on the bed. The leaves will pack down and makes a solid layer to prevent the shoots coming up....