Use full SHA1 hash when saving repository state #118
Description
Short hashes are more likely to cause ambiguous reference error: https://travis-ci.org/github/ckeditor/ckeditor5/builds/667239269#L320.
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Short hashes are more likely to cause ambiguous reference error: https://travis-ci.org/github/ckeditor/ckeditor5/builds/667239269#L320.