Commit messages should be in this format:

fixes #9999 - adds the ability to launch mars probe in V2 API

using the following conventions:

• Provide a brief description of the change in the first line, including a Redmine issue number
• Insert a single blank line after the first line.
• Optionally, provide a detailed description of the change in the following lines, breaking paragraphs where needed.
• Ensure the description is of the change and not the bug title, e.g. "X now accepts Y when doing Z" rather than "Z throws error"
• Multiple ticket numbers may be given, comma-separated
• Ensure the ticket number is filed in the correct project (e.g. Foreman top-level for Foreman core)

Notes¶

• By adding 'fixes #<issue number>' redmine will auto close the issue when merged.
• By adding 'refs #<issue number>' redmine will auto add the commit to an existing issue (usually an already closed issue).

Almost always use "fixes" for new pull requests.

Only use "refs" when when adding to a commit that has not already shipped. If it has shipped in a release already, please file a new issue and use "fixes".

How to update it¶

git commit --amend
git push -f origin

This will change the existing commit on your branch, then replace the branch on "origin" (swap with the name of your remote if you changed it).