Hey, You know you’ve got a rock wedged in there!!!
With the close up it looks big, but just a small pebble.
That hose does carry coolant @Mustangman, he just said it was NEAR the EGR.
I would unscrew that ring where it is leaking from and either have someone braze that hole shut, or install a hose barb like the one @It_s_Me, posted. You should be able to find that type of Hose Barb at any hardware store. The only thing is that it will be a “Pipe thread” , so you will need to buy a tap that size or borrow one from a plumber.
If you do tap threads in that part, take it slow and easy so you don’t damage the part that you are tapping into. Also use something like RTV blue to seal those threads when you install the new hose barb.