$ git clone -n git://pkgs.fedoraproject.org/rpms/gstreamer-plugins-good /var/lib/mock/f29-build-6433-1577/root/thebuilddir/tmp/scmroot/gstreamer-plugins-good
Cloning into '/var/lib/mock/f29-build-6433-1577/root/thebuilddir/tmp/scmroot/gstreamer-plugins-good'...
$ git reset --hard 2707604b66edb24a2a714cb751faf51923e4d17e
HEAD is now at 2707604 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild