diff --git a/third_party/git/.gitmodules b/third_party/git/.gitmodules
deleted file mode 100644
index cbeebdab7..000000000
--- a/third_party/git/.gitmodules
+++ /dev/null
@@ -1,4 +0,0 @@
-[submodule "sha1collisiondetection"]
-	path = sha1collisiondetection
-	url = https://github.com/cr-marcstevens/sha1collisiondetection.git
-	branch = master
diff --git a/third_party/git/sha1collisiondetection b/third_party/git/sha1collisiondetection
deleted file mode 160000
index 855827c58..000000000
--- a/third_party/git/sha1collisiondetection
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 855827c583bc30645ba427885caa40c5b81764d2