- undo a commit and KEEP the files
git reset --soft HEAD~1. the notationHEAD~1means previous to last commit last commit. - get remote url, in ssh or https format according to settings,
git remote show origin - set repo remote url (origin)
git remote set-url origin git@github.com:account/repo.git - download submodules of an already downloaded repo
git submodule update --init - store token and username
git config --global credential.helper store