Unless I am doing something wrong you can't have both an f12
branch and an
f12/user/myoung/xendom0 branch. The problem I am seeing is that there is a
file .git/refs/heads/f12 for the f12 branch but for
f12/user/myoung/xendom0 it wants to create the path
.git/refs/heads/f12/user/myoung/ to contain the xendom0 file so f12 has to
be both a file and a directory.
That's why it's called f12/master.