Go doesn't require tabs. Tabs and spaces work just like C, they separate tokens but are not otherwise relevant. It's not like Python where they indicate indentation level.
The only whitespace character that works differently than C is the newline. In Go, newlines (usually) separate statements, like a semicolon does in C.
Code formatting conformity is pretty big in the Go culture.
Go the language doesn't care if you use tabs or spaces, Go the community would prefer you to use tabs so when your Go code is loaded in whatever random editor any member of the community uses there are no surprises.
The only whitespace character that works differently than C is the newline. In Go, newlines (usually) separate statements, like a semicolon does in C.