atomic write for sideband remote messages

diff --git a/git-fetch.sh b/git-fetch.sh
index bcc67ab0b02d346122748d353f807723fe2390cb..79222fbb1a4bf3205f3225feafc96aa43aace87c 100755 (executable)
--- a/git-fetch.sh
+++ b/git-fetch.sh
@@ -257,6 +257,7 @@ fi
 fetch_main () {
   reflist="$1"
   refs=
+  rref=
 
   for ref in $reflist
   do
@@ -435,10 +436,10 @@ esac
 
 # If the original head was empty (i.e. no "master" yet), or
 # if we were told not to worry, we do not have to check.
-case ",$update_head_ok,$orig_head," in
-*,, | t,* )
+case "$orig_head" in
+'')
        ;;
-*)
+?*)
        curr_head=$(git-rev-parse --verify HEAD 2>/dev/null)
        if test "$curr_head" != "$orig_head"
        then