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https://issues.apache.org/jira/browse/SCM-502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17964676#comment-17964676
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Olivier Lamy commented on SCM-502:
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This project has moved from Jira to GitHub Issues. This issue was migrated to
[apache/maven-scm#714|https://github.com/apache/maven-scm/issues/714].
> checking out a tag from a remote repository fails if the tag was not on the
> current branch
> ------------------------------------------------------------------------------------------
>
> Key: SCM-502
> URL: https://issues.apache.org/jira/browse/SCM-502
> Project: Maven SCM (Moved to GitHub Issues)
> Issue Type: Bug
> Components: maven-scm-provider-gitexe
> Affects Versions: 1.2
> Reporter: Mark Struberg
> Assignee: Mark Struberg
> Priority: Major
> Fix For: 1.3
>
>
> Calling scm:checkout for a tag often results in a merge failure.
> This is caused by the fact that we do a git-pull prior to the checkout, but
> in fact for tags, we only shall do a git-fetch.
> This is due to the fact that the tag may be on a different branch, so merging
> this branch into the current branch in the local repository would destroy the
> local repository.
> Instead we should first do a git-fetch [fetchUrl] followed by a git-checkout
> tagname.
> This will create a 'detached HEAD' in the local repo which is exactly the way
> it should be in git.
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