> My current approach is:
> 1) find files common between @ & @{-1}, "ls-tree --full-tree
> --name-only -r" both branches, take the intersection
> 2) find current branch's commits for common files, for each file in
> intersection "log -1 --format=%H $current_branch -- $file"
> 3) find common files where latest commits differ, for each file in
> intersection keep the file if current branche's latest commit does not
> equal prior branch's latest commit
> 4) overwrite all kept files with the results of git-archive
PS: In large repos, I can dump the entire contents of the repo out of
git-archive faster than I can look up the commits of common files
between two branches for a more limited and surgical dump from
git-archive (say, 30 seconds to dump everything out of git-archive vs.
1 minute 30 seconds to find the intersection of files and look up the
latest commits).
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