Some Cron jobs are triggering twice on the same branch, which causes fail and eventual ' git lock' problems on builds.

I'm using git-plugin to retrieve the code from Bitbucket and there's no other call ( commit, merge, etc.) that might have invoked it.

Could not find any additional info on logs and crontab log was ok for other cron jobs on the same environment.

How can I collect and provide more info to debug this problem?