This is from the November 2018 Humble Monthly. Taken from their site:

"HITMAN™: The Complete First Season is a special version of Hitman especially for Humble Monthly subscribers!

This version is not to be confused with the GOTY version, as it does not include the Patient Zero Campaign or the GOTY Outfit Bundle. However it does still include the majority of the GOTY DLC.

Included DLC:

HITMAN™ - Episode 1 - Paris

HITMAN™ - Episode 2 - Sapienza

HITMAN™ - Episode 3 - Marrakesh

HITMAN™ - Episode 4 - Bangkok

HITMAN™ - Episode 5 - Colorado

HITMAN™ - Episode 6 - Hokkaido

To get Patient Zero with HITMAN™: The Complete First Season you can buy it from the GOTY bundle in game. You can also purchase the GOTY bundle from Steam.

NOTE:

Should you wish to purchase the remaining DLC either in game or from Steam, you can only do so by purchasing the GOTY version. However, you will only be charged for the DLC you do not currently own, as long as you have redeemed your HITMAN™: The Complete First Season key first."