Hi Ali and welcome to the site.
Personal opinion is you don't want it hanging outside as it can catch on trail rubbish.
I would expect there is a small bracket at top of the fork guard routing it down the inside path from what I have seen in the past.
Of course you don't want it catching on the wheel either.
Have you asked the dealer that has it on the outside where Honda shows it on their assembly sheets. The bikes arrive partly assembled in a crate.
I have to think someone has assembled this incorrectly.
So unless the 2020 model is different it should be on the inside.
On the one you have seen that goes inside does it have the bracket to keep it away from the wheel?
C30F Power Up needle
2 turns out
Baffle out, Screens In
It starts,it runs,it gets to where all CRFs can get to without the valve or valve plate dramas