To avoid wasted build resources, as well as quay.io content, we want to ONLY rebuild a package/plugin/workspace IF the digest used last time has changed.

Thus the midstream repo needs to document the GH SHA digest used for each package, and the export-dynamic.sh script needs to verify that if nothing has changed in a given package's source tree, then the build should be skipped.

This might be something like

if git diff currentSHA lastGoodSHA –filename-only | grep -E workspace/foo; then ...