There is. You need to subscribe to both and you will see these separately but you will see both. Take a look at the "address" of the community. If you see something like Serbia, then it's local to your instance, [email protected] is community on lemmy.ml. In order to subscribe to the one on lemmy.ml, go to https://lemmy.world/c/[email protected] (in the future when having trouble, you can paste https://lemmy.ml/c/serbia into search on lemmy.world and it should find the community)

However, if what you are observing is that the comment lists are different when viewed via your instance and via the instance it lives on(you can press the multicolor fediverse icon to open the direct link), then it is something weird that I also observe. I see that with time comments propagate, but for some topics/communities/(?) there is some lag to that