libfetchers: Bump tarball-cache version to v2#14799
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Unfortunately previous tarball caches had loose objects written to them and subsequent switch to thin packfiles. This results in possibly broken thin packfiles when the loose objects backend is disabled. Thin packfiles do not necessarily contain the whole closure of objects. When packfilesOnly is true we end up with an inconsistent state where a tree lives in a packfiles which refers to a blob in the loose objects backend. In the future we might want to nuke old cache directories and repack the tarball cache.
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Mic92
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Dec 15, 2025
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Backport failed for Please cherry-pick the changes locally and resolve any conflicts. git fetch origin 2.33-maintenance
git worktree add -d .worktree/backport-14799-to-2.33-maintenance origin/2.33-maintenance
cd .worktree/backport-14799-to-2.33-maintenance
git switch --create backport-14799-to-2.33-maintenance
git cherry-pick -x 0ffe83aa14cbc6d663fb8e12ca2950581101f8ee |
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Motivation
Unfortunately previous tarball caches had loose objects written to them and subsequent switch to thin packfiles. This results in possibly broken thin packfiles when the loose objects backend is disabled. Thin packfiles do not necessarily contain the whole closure of objects. When packfilesOnly is true we end up with an inconsistent state where a tree lives in a packfiles which refers to a blob in the loose objects backend.
In the future we might want to nuke old cache directories and repack the tarball cache.
Context
Fixes #14796.
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