$ git clone -n git://pkgs.fedoraproject.org/rpms/sigar /var/lib/mock/f29-build-4150-1012/root/thebuilddir/tmp/scmroot/sigar
Cloning into '/var/lib/mock/f29-build-4150-1012/root/thebuilddir/tmp/scmroot/sigar'...
$ git reset --hard dd8d387a1089a29264d8c40dde93a2e8c3ec7c65
HEAD is now at dd8d387 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild