### Please describe the problem.

I am receiving a weird error when trying to add a file into a git annex repo on Android. I can't explain how it got into this state, and I can't figure out how to fix it.

### What steps will reproduce the problem?

See the output below - I'm happy to run any debugging commands that are required.

### What version of git-annex are you using? On what operating system?

ASUS Transformer Infinity Android Tablet, Android 4.2.1.

[[!format sh """
git-annex version: 4.20130601-g7483ca4
build flags: Assistant Webapp Testsuite S3 WebDAV Inotify XMPP DNS
local repository version: 3
default repository version: 3
supported repository versions: 3 4
upgrade supported from repository versions: 0 1 2
"""]]


### Please provide any additional information below.

[[!format sh """
u0_a141@android:/sdcard/git-annex.home/Documents $ git annex add Music/MobileSheets/The\ New\ Real\ Book\ 1/New\ Real\ Book\ 1\ Eb_19.pdf
add Music/MobileSheets/The New Real Book 1/New Real Book 1 Eb_19.pdf (checksum...) unknown option -- reflink=auto
git-annex: /storage/emulated/legacy/git-annex.home/Documents/.git/annex/tmp/New Real Book 1 Eb15137.pdf: rename: does not exist (No such file or directory)
failed
git-annex: add: 1 failed
1|u0_a141@android:/sdcard/git-annex.home/Documents $ ls -la .git/annex/tmp/
drwxrwxr-x    2 root     sdcard_r      4096 Jun 14 13:42 .
drwxrwxr-x    6 root     sdcard_r      4096 Jun 14 13:35 ..
u0_a141@android:/sdcard/git-annex.home/Documents $
"""]]

> Should be [[fixed|done]] --[[Joey]]
