Most VCS has the ability to ‘tag’ specific points in history. Generally people use this to mark release point (‘v0.1.0.dev1). I try to show you some tagging command here.

Listing Tags

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$ git tag
v0.1.0.dev1
v0.1.0.dev2

If you are interested in looking v0.1.0 serias, you can run

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$ git tag v0.1.0.*
v0.1.0.dev1
v0.1.0.dev2

Creating Tags

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$ git tag v0.1.0.dev3
$ git tag
v0.1.0.dev1
v0.1.0.dev2
v0.1.0.dev3

Sharing tags

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$ git push --tags

Delete a tag

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$ git tag -d v0.1.0.dev3
Deleted tag '0.1.0.dev3' (was 088fb93)

If you want to delete tag at remote repo.

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$ git push origin :refs/tags/0.1.0.dev3
 - [deleted]         0.1.0.dev1

Best regards.