Create a directory for the source files & Go into created directory

mkdir matrixx
cd matrixx

Initializing Repo

repo init -u https://github.com/ProjectMatrixx/android.git -b 14.0 --git-lfs

Now sync sources

repo sync -c --no-clone-bundle --optimized-fetch --prune --force-sync -j$(nproc --all)

Now run

. build/envsetup.sh
lunch lineage_devicecodename-buildtype
m bacon