How to install any previous version of GitLab CE while using GitLab Omnibus installation?
As far as I know Omnibus installation always installs the latest GitLab version (Current 11.7) and doesn’t support different versions while restoring backup, But I have a backup of my previous Gitlab Version (10.7.3).
So If there is anyway to install previous GitLab 10.7.3 (Omnibus), I will be able to restore my backup.

Server-OS: CentOS-7(64bit) - (Self Hosted Gitlab Community Edition)

Thanks in advance.