1 files changed, 3 insertions, 1 deletions
diff --git a/lib/PublicInbox/Git.pm b/lib/PublicInbox/Git.pm
index d048051e..ff3838b3 100644
--- a/lib/PublicInbox/Git.pm
+++ b/lib/PublicInbox/Git.pm
@@ -12,6 +12,7 @@ use warnings;
  use POSIX qw(dup2);
  require IO::Handle;
  use PublicInbox::Spawn qw(spawn popen_rd);
+use PublicInbox::Tmpfile;
  use base qw(Exporter);
  our @EXPORT_OK = qw(git_unquote git_quote);
  
@@ -110,7 +111,8 @@ sub _bidi_pipe {
                          qw(-c core.abbrev=40 cat-file), $batch);
          my $redir = { 0 => fileno($out_r), 1 => fileno($in_w) };
          if ($err) {
-                open(my $fh, '+>', undef) or fail($self, "open.err failed: $!");
+                my $id = "git.$self->{git_dir}$batch.err";
+                my $fh = tmpfile($id) or fail($self, "tmpfile($id): $!");
                  $self->{$err} = $fh;
                  $redir->{2} = fileno($fh);
          }