how to checkout to a remote branch while cloning code example
Example 1: clone specific branch
git clone --single-branch --branch <branchname> <remote-repo>
Example 2: git clone specific branch
git clone --single-branch --branch <branchname> <remote-repo>
# eg
git clone -b opencv-2.4 --single-branch https://github.com/Itseez/opencv.git
Example 3: how to clone a specific branch from github that you are not working
git clone -b <branch> <remote_repo>