Output `R` and `RM` of git status is not expected by smart-pull

[maxdietrich]

Expected the output of git status to only have lines starting with A, M, D, UU, or ??. Got:
M path/to/some/file
R path/to/some/file -> path/to/some/file_renamed

I regularly get this error message during the execution of git smart-pull whenever I pull changes to files that were renamed (R) or renamed and moved (RM) in my working copy. Stashing, smart-pulling and then re-applying the stash works, but it would be awesome if smart-pull was smart enough for that!