use rsync to get progress

git-annex-remote-dumb

@@ -189,7 +189,7 @@ while read line; do
                     tmp="$mydirectory/tmp/$key"
                     d=$(dirname "$LOC")
                     runcmd mkdir -p "$d"
-                    if runcmd cp -f "$file" "$tmp" && \
+                    if runcmd rsync --progress "$file" "$tmp" && \
                             runcmd mv -f "$tmp" "$LOC"; then
                         echo TRANSFER-SUCCESS STORE "$key"
                     else