handle git

env GIT_AUTHOR_NAME='Jay Conrod'
env GIT_AUTHOR_EMAIL='jayconrod@google.com'
env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL

at 2019-05-09T18:56:25-04:00

git init

git add go.mod tagtests.go
git commit -m 'create module tagtests'
git branch -m master
git branch b

git add v0.2.1
git commit -m 'v0.2.1'
git tag 'v0.2.1'

git checkout b
git add 'v0.2.2'
git commit -m 'v0.2.2'
git tag 'v0.2.2'

git checkout master
git merge b -m 'merge'

git show-ref --tags --heads
cmp stdout .git-refs

-- .git-refs --
59356c8cd18c5fe9a598167d98a6843e52d57952 refs/heads/b
c7818c24fa2f3f714c67d0a6d3e411c85a518d1f refs/heads/master
101c49f5af1b2466332158058cf5f03c8cca6429 refs/tags/v0.2.1
59356c8cd18c5fe9a598167d98a6843e52d57952 refs/tags/v0.2.2
-- go.mod --
module vcs-test.golang.org/git/tagtests.git
-- tagtests.go --
package tagtests
-- v0.2.1 --
v0.2.1
-- v0.2.2 --
v0.2.2