$ git clone -n https://src.fedoraproject.org/rpms/R-XVector.git /var/lib/mock/f33-build-332542-58321/root/chroot_tmpdir/scmroot/R-XVector
Cloning into '/var/lib/mock/f33-build-332542-58321/root/chroot_tmpdir/scmroot/R-XVector'...
$ git reset --hard a61ae84fbcbb1ba6a48da6d123a00e1ade6c81cf
HEAD is now at a61ae84 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild