submodule.c: use GIT_DIR_ENVIRONMENT consistently

diff --git a/Documentation/gitremote-helpers.txt b/Documentation/gitremote-helpers.txt
index a4de50ad227bb1653977ee9502a3df20afefaf92..9e8681f9e1b554113e7d1881e214bc617af14109 100644 (file)
--- a/Documentation/gitremote-helpers.txt
+++ b/Documentation/gitremote-helpers.txt
@@ -415,6 +415,17 @@ set by Git if the remote helper has the 'option' capability.
 'option depth' <depth>::
        Deepens the history of a shallow repository.
 
+'option deepen-since <timestamp>::
+       Deepens the history of a shallow repository based on time.
+
+'option deepen-not <ref>::
+       Deepens the history of a shallow repository excluding ref.
+       Multiple options add up.
+
+'option deepen-relative {'true'|'false'}::
+       Deepens the history of a shallow repository relative to
+       current boundary. Only valid when used with "option depth".
+
 'option followtags' {'true'|'false'}::
        If enabled the helper should automatically fetch annotated
        tag objects if the object the tag points at was transferred