fix bug with undefined branchName for sync branch
fix bug with undefined branchName for sync branch

gushphp/gush,mickaelandrieu/gush,pierredup/gush,pierredup/gush,webflo/gush,pierredup/gush,sstok/gush,gushphp/gush,mickaelandrieu/gush,webflo/gush,cordoval/gush,gushphp/gush,webflo/gush,sstok/gush,cordoval/gush,sstok/gush,gushphp/gush,cordoval/gush