$ git clone -n https://src.fedoraproject.org/rpms/tcpreen.git /var/lib/mock/f31-build-55191-28101/root/chroot_tmpdir/scmroot/tcpreen
Cloning into '/var/lib/mock/f31-build-55191-28101/root/chroot_tmpdir/scmroot/tcpreen'...
$ git reset --hard ecf9a5f96124c2cee625f8b3b929172c4d8e20f4
HEAD is now at ecf9a5f - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild