# determine the real Git build number and branch
my $desc;
- eval {$desc = `git describe --long`};
+ eval {$desc = `git -C $root describe --long`};
if (!$@ && $desc) {
my ($v, $s, $b, $g) = $desc =~ /^([\d\.]+)(?:\.(\d+))?-(\d+)-g([0-9a-f]+)/;
$version = $v;
if (!$@) {
my @branch;
- eval {@branch = `git branch`};
+ eval {@branch = `git -C $root branch`};
unless ($@) {
for (@branch) {
my ($star, $b) = split /\s+/;