Don't require the full Git history about super-linter HOT 4 OPEN

Hi! This looks like an enhancement request, also considering that this particular implementation didn't change.

What changed is that we fixed a couple of bugs that prevented this error for being reported, and we improved the error message.

We don't probably need the whole history, but we would be fine with the number of commits that allow super-linter to correctly get changes in case VALIDATE_ALL_CODEBASE is false (the default).

You can try setting fetch depth to a number > 0 and see if that works.

In that case, we might update the documentation and the error message to reflect that.

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In other words, we need a number of commits that allows these two commands to run:

so super-linter can correctly get diffs.

This is something that super-linter cannot know in advance because the actions/checkout happens before super-linter even runs.

What super-linter might do is to require a fetch depth >0 (i.e. require that a repository is not shallow), and check if the number of commits is enough to compute the diff. Although this is not clear yet.

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How did it work in the version 5? Oh! I just checked: https://github.com/super-linter/super-linter/blob/v5.7.2/lib/functions/buildFileList.sh#L99

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That way could potentially alter the state of the local repository, which is something that we don't want to do.

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