git bash scripts

GitBranchFromTag.sh

# Problem: Build servers check out tags to build them but we need to deploy our code based on the branch the code came from.
# Solution: Get branches containing the tag, figure out which one has the tagged commit as its head

$ git branch --contains tags/some-tag
* (HEAD detached at some-tag)
  demo/carlin
  demo/steve


$ git diff --shortstat demo/steve some-tag
4 files changed, 9 insertions(+), 20 deletions(-)


$ git diff --shortstat demo/carlin some-tag

# demo/carlin matches some-tag so that must be the branch we built from