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`git-repair` can repair various forms of damage to git repositories.
It is a complement to `git fsck`, which finds problems, but does not fix
them.
## download
git clone git://git-repair.branchable.com/ git-repair
## install
This is a Haskell program, developed as a spinoff of
[git-annex](http://git-annex.branchable.com/).
To build it, you will need to install the
[Haskell Platform](http://www.haskell.org/platform/).
Then to install it:
cabal update; cabal install git-repair --bindir=$HOME/bin
## how it works
`git-repair` starts by deleting all corrupt objects, and
retreiving all missing objects that it can from the remotes of the
repository.
If that is not sufficient to fully recover the repository, it can also
reset branches back to commits before the corruption happened, delete
branches that are no longer available due to the lost data, and remove any
missing files from the index. It will only do this if run with the
`--force` option, since that rewrites history and throws out missing data.
After running this command, you will probably want to run `git fsck` to
verify it fixed the repository.
Note that fsck may still complain about objects referenced by the reflog,
or the stash, if they were unable to be recovered. This command does not
try to clean up either the reflog or the stash.
Also note that the `--force` option never touches tags, even if they are no
longer usable due to missing data, so fack may also find problems with
tags.
Since this command unpacks all packs in the repository, you may want to
run `git gc` afterwards.
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