$ git clone -n https://src.fedoraproject.org/rpms/esmtp.git /var/lib/mock/f31-build-48206-27051/root/thebuilddir/tmp/scmroot/esmtp
Cloning into '/var/lib/mock/f31-build-48206-27051/root/thebuilddir/tmp/scmroot/esmtp'...
$ git reset --hard 0e8efc8764de31d32ad2b7b72ad881e499336c14
HEAD is now at 0e8efc8 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild