diff --git a/plugins/git/git_commit_behind b/plugins/git/git_commit_behind
index 4a837f2c..6929e397 100755
--- a/plugins/git/git_commit_behind
+++ b/plugins/git/git_commit_behind
@@ -11,8 +11,11 @@ how many commits behind their remote they are
 This plugin is similar to how apt_all works for apt packages.
 
 To be able to check how behind a git repository is, we need to run git fetch.
-To avoid fetching all repos every 5 minutes and slowing down the munin-node,
-the fetch operation is triggered via a cron job.
+To avoid fetching all repos every 5 minutes (for each munin period) and thus
+slowing down the data collection, the git fetch operation is only randomly
+triggered (based on env.update.probability).
+In case of very time-consuming update operations, you can run them in a
+separate cron job.
 
 =head1 REQUIREMENTS