Match official on quiet jog (7)
I believe the answer is:
refresh
'jog' is the definition.
(I've seen this before)
'match official on quiet' is the wordplay.
'match official' becomes 'ref' (referee).
'on' becomes 're' ('on' can be mean 'with reference to').
'quiet' becomes 'sh' (both can be said to tell someone to be quiet).
'ref'+'re'+'sh'='REFRESH'
(Other definitions for refresh that I've seen before include "brace" , "Give new energy to" , "Invigorate, make new again" , "Give new vigour to" , "Revive, cheer" .)