From 77c15ef110976fb3da134b8187877d8ab7fcd975 Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Thu, 27 Apr 2023 19:09:53 -0700
Subject: [PATCH] getHEAD: use empty file if packed-refs isnt there

---
 git.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/git.zig b/git.zig
index b245dafaafb2af306fac932993622a5fb8c0f88c..aff4e73c553c50bf931a78e6c775f9be9e085c59 100644
--- a/git.zig
+++ b/git.zig
@@ -14,7 +14,10 @@ pub fn getHEAD(alloc: std.mem.Allocator, dir: std.fs.Dir) !Id {
 
     if (std.mem.startsWith(u8, h, "ref:")) {
         const r = blk: {
-            const pckedrfs = try dir.readFileAlloc(alloc, "packed-refs", 1024 * 1024);
+            const pckedrfs = dir.readFileAlloc(alloc, "packed-refs", 1024 * 1024) catch |err| switch (err) {
+                error.FileNotFound => try std.fs.cwd().readFileAlloc(alloc, "/dev/null", 1024),
+                else => |e| return e,
+            };
             var iter = std.mem.split(u8, pckedrfs, "\n");
             while (iter.next()) |line| {
                 if (std.mem.startsWith(u8, line, "#")) continue;
-- 
2.54.0