New comment by atweiden on void-packages repository

https://github.com/void-linux/void-packages/pull/43542#issuecomment-1517036442

Comment:
The current `pre_build()` function should be replaced with e.g.

```bash
_known_folders_gitrev="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
_tracy_gitrev="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"

distfiles="https://github.com/zigtools/zls/archive/refs/tags/${version}.tar.gz
 https://github.com/ziglibs/known-folders/archive/refs/tags/${_known_folders_gitrev}.tar.gz
 https://github.com/wolfpld/tracy/archive/refs/tags/${_tracy_gitrev}.tar.gz"

skip_extraction="$_known_folders_gitrev.tar.gz $_tracy_gitrev.tar.gz"

post_extract() {
	bsdtar xzf "$XBPS_SRCDISTDIR/$pkgname-$version/$_known_folders_gitrev.tar.gz" \
		--strip-components=1 -C "$wrksrc/src/known_folders"
	bsdtar xzf "$XBPS_SRCDISTDIR/$pkgname-$version/$_tracy_gitrev.tar.gz" \
		--strip-components=1 -C "$wrksrc/src/tracy"
}
```