It looks like handle_rev is seeing the same revisions over and over again.
I don't know why that would be, but the following patch just skips dups.
I have no idea if it is right, though.
Morten
diff --git a/git-annotate.perl b/git-annotate.perl
index 3800c46..a5e2d86 100755
--- a/git-annotate.perl
+++ b/git-annotate.perl
@@ -117,7 +117,10 @@ sub init_claim {
sub handle_rev {
my $i = 0;
+ my %seen = ();
while (my $rev = shift @revqueue) {
+ next if $seen{$rev};
+ $seen{$rev} = 1;
my %revinfo = git_commit_info($rev);
-
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