Release management runs on each step separately

If you have two build steps, when using Release Management, it fails because the first step has incorrectly already created a tag.

Steps to reproduce:
1. Create a command-line build step that does not upload build info, only downlod some file with file specs
2. Create a maven build step and configure Release Management.
3. Run the build
4. Click on - Artifactory Release Management – > Build and release to Artifactory
5. You will get the below error:
Git command '[git, checkout, -b, REL-BRANCH-multi3-6.16]' returned status code '128': fatal: A branch named 'REL-BRANCH-multi3-6.16' already exists.