# Remove srcdir prefix
$file =~ s/^\Q$config{srcdir}\E\/?//;
- my $sha1 = git_sha1($file);
- my $ci = git_commit_info($sha1, 1);
+ my @sha1s = run_or_non('git', 'rev-list', 'HEAD', '--', $file);
+ my $ci = git_commit_info($sha1s[$#sha1s], 1);
my $ctime = $ci->{'author_epoch'};
debug("ctime for '$file': ". localtime($ctime));