How is “a clean sheet” used?

In Alita: Battle Angel (2019), one line is: “You've been given a chance to start over, with a clean slate.”

Which movie is “a clean sheet” from?

The clip at the top of this page is from Alita: Battle Angel (2019).

You've been given a chance to start over, with a clean slate.

3 作品で登場 · 1 本目

a record of your work or behaviour that does not show any mistakes or bad things that you have done

4 本の映画に登場

オックスフォード映画の 75%
a record of your work or behaviour that does not show any mistakes or bad things that you have done
It's not often you get the opportunity to start over with a clean slate.
You've been given a chance to start over, with a clean slate.

定義：Oxford Advanced Learner's Dictionary 第 9 版