Error while pushing changes to remote git on BPMS 6

Issue

• While automate the commit/push operations on JBoss BPMS 6 to remote git are run, the errors below appear at the end when the git hook (post-commit) is executed. Everything works but these errors are annoying. What are these errors? How can they be fixed?

  INFO  [stdout] (pool-70-thread-2) Commit Changes to ********************** Started..!!
  ERROR [stderr] (pool-70-thread-1) warning: push.default is unset; its implicit value is changing in
  ERROR [stderr] (pool-70-thread-1) Git 2.0 from 'matching' to 'simple'. To squelch this message
  ERROR [stderr] (pool-70-thread-1) and maintain the current behavior after the default changes, use:
  ERROR [stderr] (pool-70-thread-1) 
  ERROR [stderr] (pool-70-thread-1)   git config --global push.default matching
  ERROR [stderr] (pool-70-thread-1) 
  ERROR [stderr] (pool-70-thread-1) To squelch this message and adopt the new behavior now, use:
  ERROR [stderr] (pool-70-thread-1) 
  ERROR [stderr] (pool-70-thread-1)   git config --global push.default simple
  ERROR [stderr] (pool-70-thread-1) 
  ERROR [stderr] (pool-70-thread-1) See 'git help config' and search for 'push.default' for further information.
  ERROR [stderr] (pool-70-thread-1) (the 'simple' mode was introduced in Git 1.7.11. Use the similar mode
  ERROR [stderr] (pool-70-thread-1) 'current' instead of 'simple' if you sometimes use older versions of Git)
  ERROR [stderr] (pool-70-thread-1) 
  ERROR [stderr] (pool-70-thread-1) To **********************************
  ERROR [stderr] (pool-70-thread-1)    ad9e9de..a21d619  develop -> develop    
  INFO  [stdout] (pool-70-thread-2) Commit Changes to ********************** Completed