Git and nasty “error: cannot lock existing info/refs fatal”

Question

After cloning from remote git repository (at bettercodes) I made some changes, commited and tried to push:

git push origin master

Errors

Answer 1

In my case, it was connected with the branch name that I had already created.

To fix the issue I've created a branch with the name that for certain shouldn't exist, like:

git checkout -b some_unknown_branch

Then I've cleared all my other branches(not active) because they were just unnecessary garbage.

git branch | grep -v \* | grep -v master | xargs git branch -D

and then renamed my current branch with the name that I've intended, like:

git checkout -m my_desired_branch_name