refspec master does not match any

Solutions

1. reinitialize git

git init
git add .
git commit -m "message"
git remote add origin "github.com/your_ropo.git"
git push -u origin master

2. create default branch (if not exist in remote)

git checkout -b 'master'
git push origin master

3. just reclone

cd ../
rm repo
git clone repo_url