[git] Receiving "fatal: Not a git repository" when attempting to remote add a Git repo

In my case I used Tortoise SVN and made the mistake to also use the Visual Studio GIT functions at the same time. That made Visual Studio lock the HEAD file inside the .git folder so neither VS or Tortoise could access the repo and i got the "fatal: Not a git repo..." error from both applications.

Solution:

  1. Go inside the .git folder and rename "HEAD.lock" to just "HEAD"
  2. Decide for one GIT admin application and don't touch the other one