+Keep changes in working tree while discarding some previous commits::
++
+Suppose you are working on something and you commit it, and then you
+continue working a bit more, but now you think that what you have in
+your working tree should be in another branch that has nothing to do
+with what you commited previously. You can start a new branch and
+reset it while keeping the changes in your work tree.
++
+------------
+$ git tag start
+$ git checkout -b branch1
+$ edit
+$ git commit ... <1>
+$ edit
+$ git checkout -b branch2 <2>
+$ git reset --keep start <3>
+------------
++
+<1> This commits your first edits in branch1.
+<2> In the ideal world, you could have realized that the earlier
+ commit did not belong to the new topic when you created and switched
+ to branch2 (i.e. "git checkout -b branch2 start"), but nobody is
+ perfect.
+<3> But you can use "reset --keep" to remove the unwanted commit after
+ you switched to "branch2".
+