To get the package, execute:
go get gopkg.in/telegram-bot-api.v2/commit/0a57807db79efce7f6719fbb2c0e0f83fda79aec
To import this package, add the following line to your code:
import "gopkg.in/telegram-bot-api.v2/commit/0a57807db79efce7f6719fbb2c0e0f83fda79aec"
For more details, see the API documentation.