$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell.git /var/lib/mock/f31-build-76473-31418/root/chroot_tmpdir/scmroot/gnome-shell
Cloning into '/var/lib/mock/f31-build-76473-31418/root/chroot_tmpdir/scmroot/gnome-shell'...
$ git reset --hard 09bcbf4d840f665355739f478a4d32dcdb0fcbdf
HEAD is now at 09bcbf4 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild