Why am I getting the message, “fatal: This operation must be run in a work tree?”

Question

Just installed git on Windows. I set the GIT_DIR variable to be c:\\git\\ and verified that this environment variable is maintained by cygwin (i.e. echo $GIT_DIR is what it

Answer 1

I had this issue, because .git/config contained worktree = D:/git-repositories/OldName. I just changed it into worktree = D:/git-repositories/NewName

I discovered that, because I used git gui, which showed a more detailed error message: