title: How to resolve “Error: bad index – Fatal: index file corrupt” when using Git-SVN
body: <p>i'm currently using git svn in one of my repo and when i do</p>
  
  <pre><code>git svn fetch
  </code></pre>
  
  <p>i got</p>
  
  <pre><code>Found possible branch point: coherent tag ref
  Initializing parent: ok stuff
  
  error: bad index file sha1 signature
  fatal: index file corrupt
  command returned error: 128
  </code></pre>
  
  <p>Is ther a way to fix this ? It's a kind of an horrible repo. It take days to synch to that point, i dont want to start from begining :/.</p>
  
  <p>I try the </p>
  
  <pre><code>rm .git/index
  </code></pre>
  
  <p>from <a href="https://stackoverflow.com/questions/1115854/how-to-resolve-error-bad-index-fatal-index-file-corrupt-when-using-git">How to resolve &quot;Error: bad index – Fatal: index file corrupt&quot; when using Git</a> but there is no such file.</p>