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Update doc/builders/fetchers.chapter.md

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Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
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Cody Hiar 2022-08-02 10:51:38 -06:00 committed by GitHub
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@ -23,7 +23,8 @@ fetchurl {
};
```
**This will reuse the old contents**. Remember to invalidate the hash argument by setting the sha256 to an empty string.
**This will reuse the old contents**.
Remember to invalidate the hash argument, in this case by setting the `sha256` attribute to an empty string.
```nix
fetchurl {