The most common and most likely answer to this crossword clue is the 6 letter word COWLED
I've seen this crossword clue in The Guardian
C
O
W
L
E
D
More clues leading to the result COWLED
Buddy explains!

The straight part
We know that "like brothers in the hood" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like brothers in the hood = cowled.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.