# Which Git version of config.yml on build is used?

**URL:** <https://discuss.circleci.com/t/which-git-version-of-config-yml-on-build-is-used/39188>\
**Category:** Build Environment\
**Tags:** git, circle-yml\
**Created:** [February 18, 2021, 1:59pm UTC](https://discuss.circleci.com/t/which-git-version-of-config-yml-on-build-is-used/39188 "2021-02-18T13:59:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![vincenzorm117](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/vincenzorm117/32/26764_2.png) [@vincenzorm117](https://discuss.circleci.com/u/vincenzorm117)\
**Post date:** [February 18, 2021, 1:59pm UTC](https://discuss.circleci.com/t/which-git-version-of-config-yml-on-build-is-used/39188/1 "2021-02-18T13:59:27Z")

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Hi

When a CircleCI build runs, does the build use the config.yml from the commit it checks out from Git?

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**Author:** ![mike](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/mike/32/24230_2.png) [@mike](https://discuss.circleci.com/u/mike)\
**Post date:** [March 1, 2021, 5:19pm UTC](https://discuss.circleci.com/t/which-git-version-of-config-yml-on-build-is-used/39188/2 "2021-03-01T17:19:20Z")

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CircleCI in most cases will pull the `config.yml` directly from the remote git repository. When re-running a job, CircleCI can pull that config.yml from a cached version instead. But in general, you should be able to safely assume this would be config.yml at the point of the commit sha1 of the workflow.

Are you potentially seeing an issue where the wrong config.yml is being used?

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**Author:** ![vincenzorm117](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/vincenzorm117/32/26764_2.png) [@vincenzorm117](https://discuss.circleci.com/u/vincenzorm117)\
**Post date:** [June 25, 2021, 4:17pm UTC](https://discuss.circleci.com/t/which-git-version-of-config-yml-on-build-is-used/39188/3 "2021-06-25T16:17:16Z")

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I am not experiencing any issues. I was just looking for confirmation that it uses the `config.yml` at that point of the commit sha1 of the workflow.

Thank you Mike!

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**Author:** ![system](https://global.discourse-cdn.com/circleci/original/3X/5/1/511608acda8e85906e15909b57bd0a46c1dbe291.png) [@system](https://discuss.circleci.com/u/system)\
**Post date:** [July 5, 2021, 4:17pm UTC](https://discuss.circleci.com/t/which-git-version-of-config-yml-on-build-is-used/39188/4 "2021-07-05T16:17:55Z")

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