tar -czf {tagname_next}.tar.gz `git diff --name-only {tagname_previous}`

make a tarball of only the changed directories in a git repos, since last tag.
replace {tagname_last} with any name you siwh to give the tarball
replace {tagname_previous} with a git reference (like a tag) from which you want to zip the changes.

make a tarball of only the changed directories in a git repos, since last tag.

git

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