$ git clone -n https://src.fedoraproject.org/rpms/gnome-desktop.git /var/lib/mock/f31-build-64669-29592/root/chroot_tmpdir/scmroot/gnome-desktop
Cloning into '/var/lib/mock/f31-build-64669-29592/root/chroot_tmpdir/scmroot/gnome-desktop'...
$ git reset --hard 70d5aae56b35a4f1d5115c5adb0d9f2cd83427b5
HEAD is now at 70d5aae - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild