From: "George Karpenkov" <>
Sent: Monday, January 14, 2013 10:57 PM
Thanks everyone!

Progress so far:

After executing reverse sed command:
find .git -name '*.*' -exec sed -i 's/    /\t/g' {} \;

Have you counted how many substitutions there are in the pack file(s). It may be sufficiently small that you can simply try all the possible combinations of fwd and reverse substitutions. Even if it takes a few days the computer won't get bored ;-)

And trying to switch the branch I get:

git checkout X

error: failed to read object 51a980792f26875d00acb79a19f043420f542cfa
at offset 41433013 from
fatal: packed object 51a980792f26875d00acb79a19f043420f542cfa (stored
in .git/objects/pack/pack-
8d629235ee9fec9c6683d42e3edb21a1b0f6e027.pack) is corrupt

So the actual .pack file is corrupt, unfortunately.

On Tue, Jan 15, 2013 at 6:13 AM, Matthieu Moy
<> wrote:
Junio C Hamano <> writes:

Everybody seems to be getting an impression that .idx is the only
thing that got corrupt.  Where does that come from?

It's the only thing that appear in the error message. This does not
imply that it is the only corrupt thing, but gives a little hope that it
may still be the case.

Actually, I thought the "read-only" protection should have protected
files in object/ directory, but a little testing shows that "sed -i"
gladly accepts to modify read-only files (technically, it does not
modify it, but creates a temporary file with the new content, and then
renames it to the new location). So, the hope that pack files are
uncorrupted is rather thin unfortunately.

Matthieu Moy

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