git clone -b stable git@github.com:GerritCodeReview/git-repo.git
2016.04.15 the repo version is v1.12.20
2016.09.27 Update the branch android_repo as default branch and delete the master branch & add REPO script for one command to repo sync codes
2017.09.27 Update the repo version is v1.12.37 and change to Tsinghua link
2021.08.12 Update the repo git to the official site, and download the stable branch