The idiomatic expression "turning back the clock" means to return to a previous state or condition, often implying that something is being reversed or undone. Full definition
Clearly, we can't turn back the clock on technological innovation; nor is the answer to try to limit its scope by closing our borders. (bankofcanada.ca)
And, while you can't turn back the clock on your current age, there is something you can do to lock in a lower premium rate. (termlife-insurance.com)
The 42 - year - old will try to turn back the clock with a win in the Masters tournament this weekend. (sbnation.com)