git-repack.sh: use the $( ... ) construct for command substitution

diff --git a/contrib/examples/git-repack.sh b/contrib/examples/git-repack.sh
index 757933174e4c17136f14a1fdd7c8c67c0a8bca50..f312405a251ddc42f0483fb3d1ccc92d8a266fd1 100755 (executable)
--- a/contrib/examples/git-repack.sh
+++ b/contrib/examples/git-repack.sh
@@ -49,7 +49,7 @@ do
        shift
 done
 
-case "`git config --bool repack.usedeltabaseoffset || echo true`" in
+case "$(git config --bool repack.usedeltabaseoffset || echo true)" in
 true)
        extra="$extra --delta-base-offset" ;;
 esac