mkdir .repo/local_manifests
curl https://raw.githubusercontent.com/Team-NoobMaster69/local_manifests/main/$DEVICE/$MANIFEST_NAME > .repo/local_manifests/manifest.xml
be sure to replace $DEVICE and $MANIFEST_NAME with a device codename and manifest name, that are available.
Example:
mkdir .repo/local_manifests && curl https://raw.githubusercontent.com/Team-NoobMaster69/local_manifests/main/alioth/lineage-23.1.xml > .repo/local_manifests/manifest.xml
After that do
repo sync -c -j$(nproc --all) --force-sync --no-clone-bundle --no-tags
to get both the rom and device sources.