When cloning a Git repository to a build machine, you can reduce the size and
increase the download speed significantly by doing a shallow clone. A shallow
clone only gets the most recent commit with the command --depth=1. It is
often combined with --single-branch --branch=<branch> to only pull a single
branch.
git clone --depth=1 --single-branch --branch=release git@github.com:rprouse/repo.git