轻量tag（lightweight tags）
git tag <tagname>
注解tag（Annotated Tags）
git tag -a v1.4
git tag -a v1.4 -m "this is my version 1.4"
展示tags(Listing Tags)
git tag
git tag -l *-rc* // -l option can be passed with a wild card expression
为旧Commit打tag
1.git log得到commit xxxxxx
2.git tag -a v1.2 xxxxxx
重新打tag
git tag -a -f v1.4 xxxxx (必须要加-f)
推送到远程
git push origin v1.4
Checking Out Tags
git checkout v1.4
（
The above command will checkout the v1.4 tag. This puts the repo in a detached HEAD state. This means any changes made will not update the tag. They will create a new detached commit. This new detached commit will not be part of any branch and will only be reachable directly by the commits SHA hash. Therefore it is a best practice to create a new branch anytime you're making changes in a detached HEAD state.
）
删除tags
git tag -d v1
资料1：https://www.atlassian.com/git/tutorials/inspecting-a-repository/git-tag
