Got the horse ready to ride but sounded like a downpour (6)
I believe the answer is:
reined
'got' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Perhaps there's a link between them I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for reined that I've seen before include "Pulled in, checked progress" , "Restrained" , "Stopped or slowed a horse" .)