files-backend: don't rewrite the `packed-refs` file unnecessarily

diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
index e8772e532c0c4a5aefd9232fdc057045d6d58289..bb370c9c7b91425ad939383d8b28c5fbbb73cbac 100644 (file)
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -157,8 +157,10 @@ HEAD::
        otherwise.
 
 color::
-       Change output color.  Followed by `:<colorname>`, where names
-       are described in `color.branch.*`.
+       Change output color. Followed by `:<colorname>`, where color
+       names are described under Values in the "CONFIGURATION FILE"
+       section of linkgit:git-config[1].  For example,
+       `%(color:bold red)`.
 
 align::
        Left-, middle-, or right-align the content between