Supplemental to @4ae1e1's answer, you can create a symlink to the SSL folder instead of rsyncing it. This will give the added benefit of keeping any changes in /etc/ssl up-to-date at /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/etc/ssl/.
/usr/bin/sudo /bin/mkdir /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/etc /usr/bin/sudo /bin/ln -s /etc/ssl/ /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/etc/ For users of command line tools
/usr/bin/sudo /bin/mkdir /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/etc /usr/bin/sudo /bin/ln -s /etc/ssl/ /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.7/etc/ Should do it.
