I just git clone one of my repository with: 
git clone https://github.com/org/repo.git
cd repo
vi ...
git commit -am "things"
git push 
remote: Permission to org/repo.git denied to nowox.
fatal: unable to access 'https://github.com/org/repo.git/': 
The requested 
URL returned error: 403
Curiously I do not have this nowox user configured on this PC. The proof is: 
git config --list | grep nowox
Also in this repository I could not find nowox
grep -r nowox
Any idea?
 
    