$ git clone -n https://src.fedoraproject.org/rpms/libseccomp.git /var/lib/mock/f29-build-1390-521/root/thebuilddir/tmp/scmroot/libseccomp
Cloning into '/var/lib/mock/f29-build-1390-521/root/thebuilddir/tmp/scmroot/libseccomp'...
$ git reset --hard dbecbbd4843bac423ef4ea418fec45e8e43f47e7
HEAD is now at dbecbbd - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild