How to apply a composer patch provided by Magento

This article instructs how to apply a composer patch for Magento Commerce, Magento Commerce Cloud, and Magento Open Source.

We strongly recommend applying and testing the patch on the Staging/Integration environment, before applying it Production. We also recommend to have a recent backup before any manipulations.

How to apply a composer patch for Magento Commerce Cloud

1. If you do not have a directory named m2-hotfixes in the project root, please create one.
2. Copy the %patch_name%.composer.patch file(s) to the m2-hotfixes directory.

3. Add, commit, and push your code changes:

   git add -A 

   git commit -m "Apply %patch_name%.composer.patch patch"

   git push origin

For additional information about applying patches to Cloud projects, see Apply patches in Magento Developer Documentation.

How to apply a composer patch for Magento Commerce and Open Source

1. Upload the patch to your Magento root directory.
2. Run the following SSH command:

   patch -p1 < %patch_name%.composer.patch

   (If the above command does not work, try using -p2 instead of -p1)
3. For the changes to be reflected, refresh the cache in the Admin under System > Cache Management.