GRAS

spclab@spclab-GT701AA-ACJ-SR5250IL:~/Desktop/summer_/test$ git clone http://github.com/guruofquality/gras.git
fatal: destination path 'gras' already exists and is not an empty directory.
spclab@spclab-GT701AA-ACJ-SR5250IL:~/Desktop/summer_/test$ rm -r gras/
spclab@spclab-GT701AA-ACJ-SR5250IL:~/Desktop/summer_/test$ git clone http://github.com/guruofquality/gras.git
Cloning into gras...
remote: Counting objects: 5015, done.
remote: Compressing objects: 100% (2104/2104), done.
remote: Total 5015 (delta 2631), reused 4979 (delta 2597)
Receiving objects: 100% (5015/5015), 1.64 MiB | 456 KiB/s, done.
Resolving deltas: 100% (2631/2631), done.
spclab@spclab-GT701AA-ACJ-SR5250IL:~/Desktop/summer_/test$ cd gras
spclab@spclab-GT701AA-ACJ-SR5250IL:~/Desktop/summer_/test/gras$ git submodule init
Submodule 'Apology' (https://github.com/guruofquality/Apology.git) registered for path 'Apology'
Submodule 'PMC' (https://github.com/guruofquality/PMC.git) registered for path 'PMC'
Submodule 'Theron' (https://github.com/guruofquality/Theron.git) registered for path 'Theron'
Submodule 'gnuradio' (https://github.com/guruofquality/gnuradio.git) registered for path 'gnuradio'
Submodule 'grextras' (https://github.com/guruofquality/grextras.git) registered for path 'grextras'
spclab@spclab-GT701AA-ACJ-SR5250IL:~/Desktop/summer_/test/gras$ git submodule update
Cloning into Apology...
fatal: reference is not a tree: ab6fc7615056dd5b6c737e1f4005250fe0281039
Unable to checkout 'ab6fc7615056dd5b6c737e1f4005250fe0281039' in submodule path 'Apology'