Not to rehash Churchill's quote, but all democracies are somewhat dysfunctional.
From the economist.com
We won't bother to rehash his ignorant, racist, homophobic, anti-female remarks.
From the usatoday.com
Much of it was a rehash of familiar phrases and policies he'd proposed earlier.
From the kansas.com
The Florida Highway Patrol trooper didn't rehash a long talk about complex events.
From the heraldtribune.com
Don't expect this Mexican movie to be a cynical rehash of the earlier one, though.
From the washingtontimes.com
No, they'll just rehash Call Of Duty but with blasters instead of machineguns.
From the metro.co.uk
This is no rehash nor is there anything wrong with the broad content of the story.
From the guardian.co.uk
David, to many posters every story is an excuse to rehash their favorite argument.
From the eatocracy.cnn.com
There has been much time to rehash minutiae that might have made a difference.
From the usatoday.com
More examples
Old material that is slightly reworked and used again; "merely a dull rehash of his first novel"
Present or use over, with no or few changes
Retrograde: go back over; "retrograde arguments"
In computer science, a hash table or hash map is a data structure that uses a hash function to map identifying values, known as keys (e.g., a person's name), to their associated values (e.g., their telephone number). ...
(Rehashing) Double hashing is a computer programming technique used in hash tables to resolve hash collisions, cases when two different values to be searched for produce the same hash key. It is a popular collision-resolution technique in open-addressed hash tables.
Something reworked, or made up from old materials; To rework old material (physical material, ideas, documents etc), redo some work, with some variations
(rehashing) insert (C and Pascal), search (C and Pascal)
To apply a different hashing function to a key when a collision occurs.