This is just an example for https://stackoverflow.com/q/58283005/283078.
The following commands were run to create this history:
git checkout -b dev
git commit --allow-empty -m 'Dev commit 1'
git commit --allow-empty -m 'Dev commit 2'
git commit --allow-empty -m 'Dev commit 3'
git checkout master
git merge --no-ff dev
git checkout dev
git rebase master
git commit --allow-empty -m 'Dev commit 4'
git commit --allow-empty -m 'Dev commit 5'
git checkout master
git merge --no-ff dev
git tag v1
The output for git log --graph --oneline v1 is as follows:
* f73dd5d Merge branch 'dev'
|\
| * 7f79a4d Dev commit 5
| * ea3d262 Dev commit 4
|/
* bdc04c9 Merge branch 'dev'
|\
| * e9d9f3a Dev commit 3
| * 4f54fd0 Dev commit 2
| * 7f601a0 Dev commit 1
|/
* 93a1d6e
The output using tig is as follows:
2019-10-08 12:37 M─┐ [master] <v1> Merge branch 'dev'
2019-10-08 12:37 │ o [dev] Dev commit 5
2019-10-08 12:37 │ o Dev commit 4
2019-10-08 12:33 M─┘ Merge branch 'dev'
2019-10-08 12:33 │ o Dev commit 3
2019-10-08 12:33 │ o Dev commit 2
2019-10-08 12:33 │ o Dev commit 1
2019-10-08 11:30 I─┘