$ git clone -n git://pkgs.fedoraproject.org/rpms/ltrace /var/lib/mock/f29-build-6959-1710/root/thebuilddir/tmp/scmroot/ltrace
Cloning into '/var/lib/mock/f29-build-6959-1710/root/thebuilddir/tmp/scmroot/ltrace'...
$ git reset --hard cf9d69d54c01f58487c9b8847011521d81b12d1e
HEAD is now at cf9d69d - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Binutils_Mass_Rebuild