$ git clone -n https://src.fedoraproject.org/rpms/unity-gtk-module.git /var/lib/mock/f31-build-60139-28698/root/thebuilddir/tmp/scmroot/unity-gtk-module
Cloning into '/var/lib/mock/f31-build-60139-28698/root/thebuilddir/tmp/scmroot/unity-gtk-module'...
$ git reset --hard b0ad3892e43aa83b30cd97b9d0f2f383ca46ed46
HEAD is now at b0ad389 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild