From 706ace0c691d74f31d0f4f07c2ee98e0f115bfc0 Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Tue, 15 Sep 2026 07:58:50 -0700
Subject: [PATCH] make: avoid fetching available LLVM revision

---
 make/llvm.mk | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/make/llvm.mk b/make/llvm.mk
index e57a61df3f..8f0c9b8df3 100644
--- a/make/llvm.mk
+++ b/make/llvm.mk
@@ -83,11 +83,13 @@ llvm-source: ## Get or update LLVM sources
 	  git init $(LLVM_PROJECTDIR); \
 	fi
 	cd $(LLVM_PROJECTDIR) && \
-	  if ! git remote get-url origin >/dev/null 2>&1; then \
-	    git remote add origin https://github.com/tinygo-org/llvm-project; \
+	  if ! git cat-file -e "$(LLVM_REVISION)^{commit}" 2>/dev/null; then \
+	    if ! git remote get-url origin >/dev/null 2>&1; then \
+	      git remote add origin https://github.com/tinygo-org/llvm-project; \
+	    fi && \
+	    git fetch --depth=1 origin $(LLVM_REVISION); \
 	  fi && \
-	  git fetch --depth=1 origin $(LLVM_REVISION) && \
-	  git checkout FETCH_HEAD
+	  git checkout $(LLVM_REVISION)
 
 # Configure LLVM.
 TINYGO_SOURCE_DIR=$(shell pwd)