# After update to 1.6.3.1. I get this error: error: bad index file sha1 signature

3 messages from 2009-05-29 to 2009-05-29. Participants: Thorben Schröder, Johannes Sixt.
Thread: https://gitlist.dev/t/19568

## Thorben Schröder, 2009-05-29 07:25

Subject: After update to 1.6.3.1. I get this error: error: bad index file sha1 signature
Message-ID: <64fe838e0905290025h6bf2172agea4beb1ccff6dd6e@mail.gmail.com>
URL: https://gitlist.dev/e/64fe838e0905290025h6bf2172agea4beb1ccff6dd6e%40mail.gmail.com

```
Hi,

I've recently updated from 1.6.1.2 to 1.6.3.1 on OS X. And after that
transition I get this:

  error: bad index file sha1 signature
  fatal: index file corrupt

on any git command I invoke in any of my repositories. I even tried to
go back to 1.6.1.2 but the error still occurs.

Is there any thing I can do to fix this? Would be great, otherwise all
my local repositories are busted :/

Thank you a lot for your help in advance!

Thorben

```

## Johannes Sixt, 2009-05-29 09:33

Subject: Re: After update to 1.6.3.1. I get this error: error: bad index file sha1 signature
Message-ID: <4A1FABCC.7000808@viscovery.net>
URL: https://gitlist.dev/e/4A1FABCC.7000808%40viscovery.net
In-Reply-To: <64fe838e0905290025h6bf2172agea4beb1ccff6dd6e@mail.gmail.com>

```
Thorben Schröder schrieb:
> I've recently updated from 1.6.1.2 to 1.6.3.1 on OS X. And after that
> transition I get this:
> 
>   error: bad index file sha1 signature
>   fatal: index file corrupt
> 
> on any git command I invoke in any of my repositories. I even tried to
> go back to 1.6.1.2 but the error still occurs.
> 
> Is there any thing I can do to fix this? Would be great, otherwise all
> my local repositories are busted :/

In one of your less important repositories you can try:

   $ mv .git/index .git/index.prev
   $ git reset

This reconstructs the index file from the HEAD commit. You loose only what
you might have staged for the next commit, but otherwise this will neither
change you repostitory nor your working directory.

You can keep .git/index.prev around for a while; perhaps someone from this
list wants it for more diagnoses.

As to why this happened, I don't know, but it's certainly interesting.

-- Hannes

```

## Thorben Schröder, 2009-05-29 13:09

Subject: Re: After update to 1.6.3.1. I get this error: error: bad index file sha1 signature
Message-ID: <64fe838e0905290609i7e8e1e87o2bb4100f9bd5cfcf@mail.gmail.com>
URL: https://gitlist.dev/e/64fe838e0905290609i7e8e1e87o2bb4100f9bd5cfcf%40mail.gmail.com
In-Reply-To: <4A1FABCC.7000808@viscovery.net>

```
This does the trick for me but only with the result to get an other
error on any pull or clone:

E.g. when I do git pull:
remote: Counting objects: 575, done.
remote: Compressing objects: 100% (260/260), done.
remote: Total 384 (delta 157), reused 0 (delta 0)
Receiving objects: 100% (384/384), 41.48 KiB, done.
fatal: pack is corrupted (SHA1 mismatch)
fatal: index-pack failed

:/ I had this problem before and could solve it with recompiling
OpenSSL and then recompiling git pointing to that new compiled OpenSSL
lib. I've tried this again but it didn't help.

Any idea? Would be so great!

Thorben

2009/5/29 Johannes Sixt <j.sixt@viscovery.net>:
> Thorben Schröder schrieb:
>> I've recently updated from 1.6.1.2 to 1.6.3.1 on OS X. And after that
>> transition I get this:
>>
>>   error: bad index file sha1 signature
>>   fatal: index file corrupt
>>
>> on any git command I invoke in any of my repositories. I even tried to
>> go back to 1.6.1.2 but the error still occurs.
>>
>> Is there any thing I can do to fix this? Would be great, otherwise all
>> my local repositories are busted :/
>
> In one of your less important repositories you can try:
>
>   $ mv .git/index .git/index.prev
>   $ git reset
>
> This reconstructs the index file from the HEAD commit. You loose only what
> you might have staged for the next commit, but otherwise this will neither
> change you repostitory nor your working directory.
>
> You can keep .git/index.prev around for a while; perhaps someone from this
> list wants it for more diagnoses.
>
> As to why this happened, I don't know, but it's certainly interesting.
>
> -- Hannes
>
>

```
