$ git clone -n https://src.fedoraproject.org/rpms/R-FMStable.git /var/lib/mock/f31-build-96729-32870/root/chroot_tmpdir/scmroot/R-FMStable
Cloning into '/var/lib/mock/f31-build-96729-32870/root/chroot_tmpdir/scmroot/R-FMStable'...
$ git reset --hard 1b082fdef16efb24be8e1141910bf7448fe44f54
HEAD is now at 1b082fd - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild