diff --git a/.git-hooks/pre-commit b/.git-hooks/pre-commit
index a9d5658..0111726 100755
--- a/.git-hooks/pre-commit
+++ b/.git-hooks/pre-commit
@@ -8,5 +8,8 @@ set -o noglob             # Disable filename expansion (globbing),
                           # path splitting.
 shopt -s inherit_errexit  # Inherit the errexit option status in subshells.
 
+set -x
+
+git update-index --refresh
 cargo clippy --all-targets --all -- -D warnings
 cargo fmt -- --check