How do you find out when a particular Git commit was merged into a branch? Use this tool.
20170609/https://github.com/mhagger/git-when-merged
How do you find out what release branches a Git commit is part of? Use this command:
git tag --contains <commit>
# Or this:
git describe --contains <commit>
20170609/https://stackoverflow.com/questions/1474115/find-tag-information-for-a-given-commit/7561599#7561599