$ git clone -n https://src.fedoraproject.org/rpms/R-unix.git /var/lib/mock/f33-build-339031-58625/root/chroot_tmpdir/scmroot/R-unix
Cloning into '/var/lib/mock/f33-build-339031-58625/root/chroot_tmpdir/scmroot/R-unix'...
$ git reset --hard 212f07b475bc35cc78809bc92c2e3bd456ba5aa7
HEAD is now at 212f07b - Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild