git rm --cached file1.txt
git commit -m "remove file1.txt"
git init
git remote add origin https://github.com/yourusername/your-repo-name.git
git log master..
git log master..branchname
git rm --cached file1.txt
git commit -m "remove file1.txt"
git init
git remote add origin https://github.com/yourusername/your-repo-name.git
git log master..
git log master..branchname