Cloning with protected keys

[MatthewRalston]

Similar to #94 , rather than AuthFailed I'm getting complaints about "session down" when my key is protected. Standard git clone of the same repo works fine and triggers password prompt.

Caused by: org.eclipse.jgit.errors.TransportException: [email protected]:pmandera/basic-scala-project.g8.git: session is down
    at org.eclipse.jgit.transport.JschSession$JschProcess.<init>(JschSession.java:154)
    at org.eclipse.jgit.transport.JschSession$JschProcess.<init>(JschSession.java:118)
    at org.eclipse.jgit.transport.JschSession.exec(JschSession.java:91)
    at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.<init>(TransportGitSsh.java:248)
    at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:147)
    at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:127)
    at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:113)
    at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1062)
    at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:129)
    ... 28 more
Caused by: com.jcraft.jsch.JSchException: session is down
    at com.jcraft.jsch.Session.openChannel(Session.java:762)
    at org.eclipse.jgit.transport.JschSession$JschProcess.<init>(JschSession.java:147)
    ... 36 more
Error during sbt execution: org.eclipse.jgit.api.errors.JGitInternalException: Exception caught during execution of fetch command