Re: [PATCH v4 1/4] cache-tree: Create/update cache-tree on checkout

David Turner [off-list ref] writes:

When git checkout checks out a branch, create or update the
cache-tree so that subsequent operations are faster.

update_main_cache_tree learned a new flag, WRITE_TREE_REPAIR.  When
WRITE_TREE_REPAIR is set, portions of the cache-tree which do not
correspond to existing tree objects are invalidated (and portions which
do are marked as valid).  No new tree objects are created.

Signed-off-by: David Turner <redacted>
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Looks safe, if a bit wasteful, to me.

Thanks; will queue.