jbang.java

///usr/bin/env jbang "$0" "$@" ; exit $?
//DEPS org.eclipse.jgit:org.eclipse.jgit:5.4.0.201906121030-r
//DEPS org.slf4j:slf4j-nop:1.7.31

package me.porcelli.jgit;

import com.jcraft.jsch.*;

import org.eclipse.jgit.api.CloneCommand;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.transport.JschConfigSessionFactory;
import org.eclipse.jgit.transport.SshTransport;
import org.eclipse.jgit.transport.OpenSshConfig;
import org.eclipse.jgit.util.FS;

public class jbang {

    public static void main(String... args) throws Exception {
        CloneCommand cloneCommand = Git.cloneRepository();
        cloneCommand.setURI( args[0] );
        cloneCommand.setTransportConfigCallback(transport -> {
            final SshTransport sshTransport = (SshTransport) transport;
            sshTransport.setSshSessionFactory(new JschConfigSessionFactory() {
                @Override
                protected void configure(OpenSshConfig.Host host, Session session) {}

                @Override
                protected JSch createDefaultJSch(FS fs) throws JSchException {
                    JSch defaultJSch = super.createDefaultJSch( fs );
                    defaultJSch.addIdentity( "/path/to/private_key" );
                    return defaultJSch;
                }
            });
        });
        cloneCommand.call();
    }

}