diff --git a/packages/opencode/src/git/index.ts b/packages/opencode/src/git/index.ts
index 5e76b7f7313a..ff65e8e6225e 100644
--- a/packages/opencode/src/git/index.ts
+++ b/packages/opencode/src/git/index.ts
@@ -14,6 +14,8 @@ const cfg = [
   "core.symlinks=true",
   "-c",
   "core.quotepath=false",
+  "-c",
+  "diff.mnemonicprefix=false",
 ] as const
 
 const out = (result: { text(): string }) => result.text().trim()