1 files changed, 3 insertions, 0 deletions
diff --git a/t/README b/t/README
index c730a70770..0f97a51640 100644
--- a/t/README
+++ b/t/README
@@ -439,6 +439,9 @@ GIT_TEST_DEFAULT_HASH=<hash-algo> specifies which hash algorithm to
 use in the test scripts. Recognized values for <hash-algo> are "sha1"
 and "sha256".
 
+GIT_TEST_WRITE_REV_INDEX=<boolean>, when true enables the
+'pack.writeReverseIndex' setting.
+
 Naming Tests
 ------------