The command should be "git clone git@github.com:darkcoinproject/darkcoin.git darkcoin" not this "git clone git@github.com:darkcoin-project/darkcoin.git darkcoin".
The command should be "git clone git@github.com:darkcoinproject/darkcoin.git darkcoin"
not this "git clone git@github.com:darkcoin-project/darkcoin.git darkcoin".