Initial state:
==============

A - B - C - D - E - F - G - H  master
             \
              \
               I - J - K - L  feature


REBASE: After git checkout feature; git rebase master
(or git rebase master feature):
=====================================================

A - B - C - D - E - F - G - H  master
                             \
                              \
                               I' - J' - K' - L' feature