What is your USDA grow zone? or what is the coldest temperatures you expect this Winter since that's upon you soon?
Pinch out all the dead then...
If you're expecting below freezing often, and you do not have many...heal it into the ground, whole pot, and mulch it
so the surrounding soil is protected. Do not mulch the trunk but 1/3 meter diameter mulch, 4 fingers deep is gobs.
Do this on the (here in the States) North side of your home or the side that is
best protected from the most harsh winds, and protected from the Sun for the Winter can help come transitional months
like Springtime when it's trying to grow but freezing temps often still expected. Typically the side of the house that gets green algae
on the siding. The foliage will turn off coloured over Winter but should not be browned like this one portion is now.
Come Springtime new growth will colour back up nicely, and you might have a go at repotting then.
Nice dark lush growth. You have not, given us any details on your placement or care of this hinoki.
The don't like harsh winds, they balk at drying out.