$ git clone -n https://src.fedoraproject.org/rpms/R-testthat.git /var/lib/mock/f31-build-74246-31099/root/chroot_tmpdir/scmroot/R-testthat
Cloning into '/var/lib/mock/f31-build-74246-31099/root/chroot_tmpdir/scmroot/R-testthat'...
$ git reset --hard a8a94bed990f5f04169b024d7b2f35947b29f869
HEAD is now at a8a94be - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild