See also <https://developer.r-project.org/>, 
<https://developer.r-project.org/release-checklist.html>


Populate CRAN subdirectory src/contrib/x.y.z/Recommended
for patch releases at START (T-10) 
(and for Dot-zero releases at START (T-31), typically already there)

cd /srv/ftp/pub/R/src/contrib
mkdir x.y.z
cp -pr x.y-patched/Recommended x.y.z 

Populate CRAN subdirectory x.y-patched at  PRERELEASE (T-3)

cd /srv/ftp/pub/R/src/contrib
mkdir x.y-patched
cp -pr x.y.0/Recommended x.y-patched