GNU bug report logs - #78542
[Security] hash locking needed for tree-sitter downloads

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From: Daniel Colascione <dancol <at> dancol.org>
To: Juri Linkov <juri <at> linkov.net>
Cc: Yuan Fu <casouri <at> gmail.com>, 78542 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: bug#78542: [Security] hash locking needed for tree-sitter downloads
Date: Tue, 10 Jun 2025 00:44:30 -0700

Juri Linkov <juri <at> linkov.net> writes:

>>> When treesit--install-language-grammar-full-clone is nil,
>>> "--depth 1" is added to "git clone".
>>> 
>>> So we need a Git guru to recommend a command line to use
>>> "git clone" with "--depth 1" to check out a single commit.
>>
>> Would it work if we do a blobless full clone, checkout the commit, and fetch depth=1? Eg,
>>
>> git clone https://github.com/tree-sitter/tree-sitter-json.git --filter=blob:none
>> cd tree-sitter-json
>> git checkout 4d770d3
>> git fetch --depth=1
>
> This still keeps full history.

There's a difference between full history and all blobs for all
revisions in this history.  You can also use --shallow-since during the
clone with a date to further limit history.  --shallow-exclude would
probably work even better, since you wouldn't need a date, but it's
broken for me somehow, at least with the repository above.
But --shallow-since works.

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