Can we use both Git and Mercurial to access to a single repository?

[Kazuyoshi Furutaka]

This question is in reference to Atlassian Documentation: Set up version control

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[evzijst · Accepted solution]

No. A repo's underlying SCM is determined at repo creation time and fixed thereafter. A Mercurial repo cannot be cloned with the git client, or vice versa.

It is true that some translation software exists that allows a git repo to be pushed to with a mercurial client (e.g. http://hg-git.github.io/), but ultimately that is just your machine using an separate tool to translate hg to git.

[Kaz]

You can use the Hg-Git Mercurial extension to access Git repositories if you want to use both Git and Mercurial for a repository. I don't know if such an extension exists for Git. 

[Kazuyoshi Furutaka]

Thanks Kaz for the information.