Nearest tag with optional tagPattern

[LTAbhirup]

I have two tags: the most recent is v5.3.1-qa1 and second most is v5.3.1.
I am using this config
androidGitVersion {
format "%tag%"
tagPattern (/^v([0-9]+).([0-9]+).([0-9]+)((-qa[0-9]+)*)$/)
}

Here I have made (-qa[0-9]+) as optional.
When running for react-native (in android/app/build.gradle) to generate version name, it is picking up 5.3.1 .Ideally it should be 5.3.1-qa1 since that is the one matching and most recent.

Please help to resolve this or if I am missing something.