rbm is spending hours just to include already built topl and tor-android-service before starting building

I am waiting for hours now at a stage where rbm is showing

Using directory
/home/gk/tor-browser-build/out/tor-android-service/tor-android-service-68b91198066c-41ebe2
Using directory
/home/gk/tor-browser-build/out/tor-onion-proxy-library/tor-onion-proxy-library-aeb63ebd079b-59f301

hoping that the build is finally starting. Note, there is no need to rebuild anything at that stage, just including the already built artifacts.