When looking at Git conflict markers it can sometimes be confusing which half of the conflicting section belongs to which branch:
<<<<<<< HEAD
foo
=======
bar
>>>>>>> cb1abc6bd98cfc84317f8aa95a7662815417802d
the top half is the branch you a merging into
the bottom half is from the commit that you are trying to merge in
What this means in practice if you are doing something like git pull (which is equivalent to a git fetch followed by a git merge) is:
the top half shows your local changes
the bottom half shows the remote changes, which you are trying to merge in
GIT REBASE MASTER
==
On the other hand, if you are doing something like git rebase origin/master, you are effectively trying to merge your local changes "into" the upstream changes (by replaying them on top); that means:
the top half shows the upstream changes
the bottom half shows your local changes, which you are trying to merge in