Failed to execute git status when updating Doctrine

I'm servicing a system, and I need to upload some changes to the production server. Some of these changes involve mapping and adding new entities to the database.

The problem: the ./vendor/bin/doctrine-module file is not on the server.

What I've done so far: I uploaded my composer.lock and gave an install.

The following error occurs when attempting to update Doctrine

 [RuntimeException]                                             
  Failed to execute git status --porcelain --untracked-files=no  
  error: bad index file sha1 signature                           
  fatal: index file corrupt    

I've tried user:

rm -f .git/index 
git reset

But the error persists when running the command again. Could Algume help me?