To update the webhook for an AWS CodeBuild project

The following update-webhook example updates a webhook for the specified CodeBuild project with two filter groups. The --rotate-secret parameter specifies that GitHub rotate the project's secret key every time a code change triggers a build. The first filter group specifies pull requests that are created, updated, or reopened on branches with Git reference names that match the regular expression ^refs/heads/master$ and head references that match ^refs/heads/myBranch$. The second filter group specifies push requests on branches with Git reference names that do not match the regular expression ^refs/heads/myBranch$.

aws codebuild update-webhook \
    --project-name Project2 \
    --rotate-secret \
    --filter-groups "[[{\"type\":\"EVENT\",\"pattern\":\"PULL_REQUEST_CREATED, PULL_REQUEST_UPDATED, PULL_REQUEST_REOPENED\"},{\"type\":\"HEAD_REF\",\"pattern\":\"^refs/heads/myBranch$\",\"excludeMatchedPattern\":true},{\"type\":\"BASE_REF\",\"pattern\":\"^refs/heads/master$\",\"excludeMatchedPattern\":true}],[{\"type\":\"EVENT\",\"pattern\":\"PUSH\"},{\"type\":\"HEAD_REF\",\"pattern\":\"^refs/heads/myBranch$\",\"excludeMatchedPattern\":true}]]"

Output:

{
    "webhook": {
        "filterGroups": [
            [
                {
                    "pattern": "PULL_REQUEST_CREATED, PULL_REQUEST_UPDATED, PULL_REQUEST_REOPENED",
                    "type": "EVENT"
                },
                {
                    "excludeMatchedPattern": true,
                    "pattern": "refs/heads/myBranch$",
                    "type": "HEAD_REF"
                },
                {
                    "excludeMatchedPattern": true,
                    "pattern": "refs/heads/master$",
                    "type": "BASE_REF"
                }
            ],
            [
                {
                    "pattern": "PUSH",
                    "type": "EVENT"
                },
                {
                    "excludeMatchedPattern": true,
                    "pattern": "refs/heads/myBranch$",
                    "type": "HEAD_REF"
                }
            ]
        ],
        "lastModifiedSecret": 1556312220.133
    }
}

For more information, see Change a Build Project's Settings (AWS CLI) in the AWS CodeBuild User Guide