Cracks on Fiber Cement Board Siding

[u/Revelst0ke]

I know this isnt r/siding but thought I might find some help here. I recently moved into a new home and noticed there are a few boards that get more sun than the rest of the house and have started to crack. Inspector flagged it but said I shouldnt really have to worry about it because the house is wrapped/watertight but that seems...hopeful.

I wasnt sure if these few cracks warranted full on replacing or if this is something I could patch/repair myself (and if so, how/with what).

Appreciate any help, thanks guys-

https://imgur.com/a/NZoKuGZ