git-svn: avoid extra get_log calls when refspecs are added for fetching

Since fetch_loop_common starts from the lowest revision number
in a group of Git::SVN objects; we want to avoid refetching
get_log for current users for things we've already cut it.

Signed-off-by: Eric Wong <normalperson@yhbt.net>

diff --git a/git-svn.perl b/git-svn.perl
index 58d0600..8c24012 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -2370,7 +2370,12 @@ sub gs_fetch_loop_common {
                        skip_unknown_revs($err);
                };
                foreach my $gs (@gs) {
-                       $self->get_log([$gs->{path}], $min, $max, 0, 1, 1, sub
+                       my $min_r = $min;
+                       my $rdb_max = $gs->rev_db_max;
+                       next if $rdb_max >= $max;
+                       $min_r = $rdb_max + 1 if ($rdb_max > $min_r);
+                       $self->get_log([$gs->{path}], $min_r, $max,
+                                      0, 1, 1, sub
                                       { my ($paths, $rev) = @_;
                                         push @{$revs{$rev}},
                                              [ $gs,