i've, by accident, sent BCC from bittrex to my own BTC wallet on coinbase.
Both wallets are mine - how can i get(find out) my private keys to swap them that i get my money from wrong chain ? And - how can i these private keys ?
Transaction is seen here :

https://bitinfocharts.com/bitcoin%20cash/tx/64c577f636882bf8b0160aaed17da458f4f6c350463426eda11b63b003059ce0

please help ... 

thanks - NetBird