Cloning this repository:

git clone git://gitorious.org/~smrdis123/linux-on-qualcomm-s-msm/smrdis123s-ext3-kernel.git smrdis123s-ext3-kernel
cd smrdis123s-ext3-kernel

Add this repository as a remote to an existing local repository:

git remote add smrdis123s-ext3-kernel git://gitorious.org/~smrdis123/linux-on-qualcomm-s-msm/smrdis123s-ext3-kernel.git
git fetch smrdis123s-ext3-kernel
git checkout -b my-local-tracking-branch smrdis123s-ext3-kernel/master_or_other_branch