This is one of those early morning comets that are low to the horizon at dawn and very dim. Consequently, 2 minute sub-images at ISO 200 barely picked it up from the Bortle Red Zone glow I was shooting in.
I could easily see two 11th magnitude galaxies nearby in the sub-images, but this guy was barely visible. I think it is supposed to get brighter before too long. I will try again for it if and when it does.