handle git

env GIT_AUTHOR_NAME='Bryan C. Mills'
env GIT_AUTHOR_EMAIL='bcmills@google.com'
env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL

git init

at 2019-07-15T17:16:47-04:00
git add go.mod main.go
git commit -m 'all: add go.mod and main.go'
git branch -m master
git tag v1.0.0

at 2019-07-15T17:17:27-04:00
cp _next/main.go main.go
git add main.go
git commit -m 'add init function'

git log --oneline --decorate=short
cmp stdout .git-log

-- .git-log --
b325d82 (HEAD -> master) add init function
8da67e0 (tag: v1.0.0) all: add go.mod and main.go
-- go.mod --
module vcs-test.golang.org/git/commit-after-tag.git

go 1.13
-- main.go --
package main

func main() {}
-- _next/main.go --
package main

func main() {}
func init() {}
