Github user kjmrknsn commented on the issue:
https://github.com/apache/zeppelin/pull/2658
@kokes I confirmed that CI test against JGit 4.9.0 always fails and one
against JGit 4.5.4 passed.
## JGit 4.9.0
* comimt:
https://github.com/kjmrknsn/zeppelin/commit/2afba274c83d4e9f4527fcde41e09c7707c89a4c
* CI test result: https://travis-ci.org/kjmrknsn/zeppelin/builds/310104872
## JGit: 4.5.4
* commit:
https://github.com/kjmrknsn/zeppelin/commit/27b08c9d0a938dbe1e70ed27c4e6f1ba21c4dafd
* CI test result: https://travis-ci.org/kjmrknsn/zeppelin/builds/310107611
So, I think JGit version should be 4.5.4, which is the latest version for
Java 7: https://projects.eclipse.org/projects/technology.jgit---
