Changes were about noun getting repeat (5)
I believe the answer is:
renew
'repeat' is the definition.
(thesaurus)
'changes were about noun' is the wordplay.
'changes' indicates an anagram.
'about' indicates putting letters inside.
'noun' becomes 'n'.
'were' with letters rearranged gives 'reew'.
'reew' going around 'n' is 'RENEW'.
'getting' is the link.
(Other definitions for renew that I've seen before include "Make afresh" , "Establish again" , "Transform born-again" , "Extend loan period" , "Reform" .)