Document TOR_UPSTREAM_REMOTE_NAME env variable

diff --git a/scripts/git/pre-push.git-hook b/scripts/git/pre-push.git-hook
index 00e048029e1eb8c46bd7899a1c72c71fc1aae190..c9e72a4d43e3932c544135b3dc19200b700a2893 100755 (executable)
--- a/scripts/git/pre-push.git-hook
+++ b/scripts/git/pre-push.git-hook
@@ -8,6 +8,9 @@
 #
 # To install this script, copy it into .git/hooks/pre-push path in your
 # local copy of git repository. Make sure it has permission to execute.
+# Furthermore, make sure that TOR_UPSTREAM_REMOTE_NAME environment
+# variable is set to local name of git remote that corresponds to upstream
+# repository on e.g. git.torproject.org.
 #
 # The following sample script was used as starting point:
 # https://github.com/git/git/blob/master/templates/hooks--pre-push.sample