Subject: Re: Git fast-import : Warning duplicated ref: refs/remotes/origin/master

From: Jonathan Nieder <[email-masked]>
Date: Mon, 30 May 2011 12:35:17 -0500

Jérémie NIKAES wrote:

> No, I actually still have the problem. The version commited on github
> is pulling revisions straight to refs/heads/master which is gross
> After discussing this matter with our teacher Matthieu Moy, I wanted
> to change this to refs/remotes/origin/master but then this warning
> gets thrown.

The following fixes it for me.

-- >8 --
Subject: use refs/mediawiki/<remote> namespace for private refs

Unless the "refspec" capability is used, the remote helper machinery
expects remote helpers to write remote refs/heads/master ref to
refs/heads/master.  That's not very good since it scribbles on top of
whatever local changes the user might have.

So specify a refspec that puts the refs elsewhere.  For now this
only works when fetching from a named remote, like so:

	git remote add origin mediawiki::testwiki
	git fetch origin

Attempting to fetch directly from a URL with a command like
"git fetch mediawiki::testwiki" produces an "Invalid refspec"
error.
---
 git-remote-mediawiki |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/git-remote-mediawiki b/git-remote-mediawiki
index af66b58..7a3fdd3 100755
--- a/git-remote-mediawiki
+++ b/git-remote-mediawiki
@@ -7,6 +7,7 @@ use Storable qw(freeze thaw);
 use DateTime::Format::ISO8601;
 use Encode qw(encode_utf8);
 
+my $remotename = $ARGV[0];
 my $url = $ARGV[1];
 
 print STDERR "$url\n";
@@ -62,6 +63,7 @@ while ($loop) {
 
 sub mw_capabilities {
 #	print STDOUT "fetch\n";
+	print STDOUT "refspec refs/heads/*:refs/mediawiki/$remotename/*\n";
 	print STDOUT "import\n";
 	print STDOUT "list\n";
 	print STDOUT "option\n";
@@ -91,7 +93,7 @@ sub mw_import {
 	
 	sub get_last_revision {
 		# Get last commit sha1
-		my $commit_sha1 = `git rev-parse refs/remotes/origin/master 2>/dev/null`;
+		my $commit_sha1 = `git rev-parse refs/mediawiki/$remotename/master 2>/dev/null`;
 
 		# Get note regarding that commit
 		chomp($commit_sha1);
@@ -202,15 +204,15 @@ sub mw_import {
 		
 		# If it's a clone and the first revision, initalize this ref
 		if ($fetch_from == 1 && $n == 1) {
-			#print "reset refs/remotes/origin/master\n";
+			#print "reset refs/mediawiki/$remotename/master\n";
 		}
-		print "commit refs/remotes/origin/master\n";
+		print "commit refs/mediawiki/$remotename/master\n";
 		print "mark :$n\n";
 		print "committer $user <$user\@$wiki_name> ", $dt->epoch, " +0000\n";
 		print "data ", bytes::length(encode_utf8($comment)), "\n", encode_utf8($comment);
 		# If it's not a clone, needs to know where to start from
 		if ($fetch_from != 1 && $n == 1) {
-			print "from refs/remotes/origin/master^0\n";
+			print "from refs/mediawiki/$remotename/master^0\n";
 		}
 		print "M 644 inline $title.wiki\n";
 		print "data ", bytes::length(encode_utf8($content)), "\n", encode_utf8($content);
-- 
1.7.5.3