| `CI_MERGE_REQUEST_PROJECT_URL` | 11.6 | all | The URL of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md)(e.g.`http://192.168.10.15:3000/namespace/awesome-project`). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_REF_PATH` | 11.6 | all | The ref path of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). (e.g. `refs/merge-requests/1/head`). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_SOURCE_BRANCH_NAME` | 11.6 | all | The source branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_SOURCE_BRANCH_SHA` | 11.9 | all | The HEAD SHA of the source branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_SOURCE_BRANCH_SHA` | 11.9 | all | The HEAD SHA of the source branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used, the merge request is created, and the pipeline is a [merged result pipeline](../merge_request_pipelines/pipelines_for_merged_results/index.md). **(PREMIUM)** |
| `CI_MERGE_REQUEST_SOURCE_PROJECT_ID` | 11.6 | all | The ID of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_SOURCE_PROJECT_PATH` | 11.6 | all | The path of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_SOURCE_PROJECT_URL` | 11.6 | all | The URL of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_TARGET_BRANCH_NAME` | 11.6 | all | The target branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_TARGET_BRANCH_SHA` | 11.9 | all | The HEAD SHA of the target branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_TARGET_BRANCH_SHA` | 11.9 | all | The HEAD SHA of the target branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used, the merge request is created, and the pipeline is a [merged result pipeline](../merge_request_pipelines/pipelines_for_merged_results/index.md). **(PREMIUM)** |
| `CI_MERGE_REQUEST_TITLE` | 11.9 | all | The title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_ASSIGNEES` | 11.9 | all | Comma-separated list of username(s) of assignee(s) for the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |
| `CI_MERGE_REQUEST_MILESTONE` | 11.9 | all | The milestone title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). Available only if `only: [merge_requests]` is used and the merge request is created. |