gitweb: Add a few comments about %feature hash

diff --git a/Documentation/git-commit-tree.txt b/Documentation/git-commit-tree.txt
index cf25507f8f37194461e939bfa389ca00af05a5b1..1571dbbb7449fb0d790fccf6b6adbca8d4f5c664 100644 (file)
--- a/Documentation/git-commit-tree.txt
+++ b/Documentation/git-commit-tree.txt
@@ -60,6 +60,7 @@ either `.git/config` file, or using the following environment variables.
        GIT_AUTHOR_DATE
        GIT_COMMITTER_NAME
        GIT_COMMITTER_EMAIL
+       GIT_COMMITTER_DATE
 
 (nb "<", ">" and "\n"s are stripped)