In a clean directory, perhaps ~/android/lineage-14.1/ :
repo init -u https://github.com/LineageOS/android.git -b cm-14.1
git clone https://github.com/Charles-IV/android_local_manifests.git .repo/local_manifests -b cm-14.1
repo sync -c
. build/envsetup.sh
brunch <device> # where <device> is any synced or supported device
Please note sometimes, you may need the --force-sync flag on the repo sync command.