CM12.1

How launch a cm-12.1 build:

make clean  
repo sync --no-tags
source build/envsetup.sh  
brunch amami  

How to initially set up your build tree:

repo init -u https://github.com/cm12-amami/android.git -b cm-12.1 --groups=all,-notdefault,-darwin,-x86,-mips
cd .repo
git clone https://github.com/cm12-amami/local_manifests 
cd local_manifests 
git checkout cm-12.1 
cd ../.. 
repo sync --no-tags

Note: If you use a MAC to build, omit the -darwin in above repo init statement.