In this case, commiters/somework is not a file, hence C<> is correct.
against blead to ensure that your code is not broken by blead moving.
When you have finished your work and performed a final rebase and test,
you can merge it into master like this (assuming your work was on the
-branch C<committer/somework>):
+branch C<<committer/somework>>):
$ git checkout blead
$ git merge --no-ff --no-commit committer/somework