git-svn: avoid network timeouts for long-running fetches

Long-running fetches run inside children to avoid memory leaks.
When we refork, the connection in the parent can be idle for a
long time; attempting to reuse it in the next child can result
in timeouts.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-svn.perl

@@ -459,6 +459,7 @@ sub fetch_lib {
 		$min = $max + 1;
 		$max += $inc;
 		$max = $head if ($max > $head);
+		$SVN = libsvn_connect($SVN_URL);
 	}
 	restore_index($index);
 	return { revision => $last_rev, commit => $last_commit };