NB! It seems this console command is not compatible with CS2.
Command Profile

HOST_WORKSHOP_MAP

CS:GO

This command will get the latest version of the workshop map with the specified ID (the ID is the numbers at the end of the workshop URL) and set it as your server's map.

Syntax
host_workshop_map [Workshop ID]

Description

This command will get the latest version of the workshop map with the specified ID (the ID is the numbers at the end of the workshop URL) and set it as your server's map.

Syntax And Arguments

host_workshop_map [Workshop ID]
Workshop ID The ID of the workshop map you wish to set as the server's map. A workshop map's ID is the number part of a workshop page URL.