+sub commit_title ($$) {
+ my ($self, $oid) = @_; # PublicInbox::Git, $sha1hex
+ my $buf = cat_file($self, $oid) or return;
+ utf8::decode($$buf);
+ ($$buf =~ /\r?\n\r?\n([^\r\n]+)\r?\n?/)[0]
+}
+
+# returns the modified time of a git repo, same as the "modified" field
+# of a grokmirror manifest
+sub modified ($) {
+ my ($self) = @_;
+ my $modified = 0;
+ my $fh = popen($self, qw(rev-parse --branches));
+ defined $fh or return $modified;
+ local $/ = "\n";
+ foreach my $oid (<$fh>) {
+ chomp $oid;
+ my $buf = cat_file($self, $oid) or next;
+ $$buf =~ /^committer .*?> ([0-9]+) [\+\-]?[0-9]+/sm or next;
+ my $cmt_time = $1 + 0;
+ $modified = $cmt_time if $cmt_time > $modified;
+ }
+ $modified || time;
+}
+