Sync to the lastest release code:
$ mkdir ~/bin
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
$ export PATH=~/bin:$PATH
$ repo init --repo-url=https://mirrors.tuna.tsinghua.edu.cn/git/git-repo --no-clone-bundle -u https://github.com/halberdholder/manifests -b master -m rk3399_linux_release.xml
$ repo sync --no-clone-bundle