github-reset

first check which commit you want to backup 9e424bdf50cbb2d4e0fcc12e18ac30e0b7e2cc6e

#2nd step
git reset --hard 9e424bdf50cbb2d4e0fcc12e18ac30e0b7e2cc6e

#3rd step

git push -f

#helpful video

https://www.youtube.com/watch?v=KEfQm2robRo&pp=ygUZZ2l0aHViIGJhY2sgdG8gb2xkIGNvbW1pdA%3D%3D