Comment 1 for bug 236149

This is because we are dereferencing the symlink, trying to find the branch you are working on.

If you did:

bzr revert blogs

It would recursively revert everything underneath, which will naturally revert that file.

Or you could

rm blogs/media
ln foo blogs/media
bzr revert blogs/media

Certainly this is still a bug, but it is the same bug as bug #128562. Just that we dereference symlinks when trying to open a branch. (Note that we need to dereference some symlinks, since /foo/bar/baz we should presumably dereference foo and bar, but not baz.