Month to sort out about old race (7)
I believe the answer is:
trojans
'month to' is the definition.
I can't tell whether this definition defines the answer.
'sort out about old race' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'about' means one lot of letters goes inside another.
'old race' becomes 'jan' (I am not sure about this - if you are sure you should believe this answer much more).
'sort' with letters rearranged gives 'tros'.
'tros' going around 'jan' is 'TROJANS'.
Can you help me to learn more?
(Other definitions for trojans that I've seen before include "Hard-working types" , "Hard workers" , "noted for hard work" , "People of Paris" , "Citizens of ancient city in Asia Minor invaded by Wooden Horse" .)