build.gradle: properly calculate gitVersionBase if latest tag is not a release tag

def gmsVersion = "13.2.80"

def gmsVersionCode = Integer.parseInt(gmsVersion.replaceAll('\\.', ''))

def gitVersionBase = execResult('git', 'describe', '--tags', '--abbrev=0').substring(1)

def gitVersionBase = execResult('git', 'describe', '--tags', '--abbrev=0', '--match=v[0-9]*').substring(1)

def gitCommitCount = Integer.parseInt(execResult('git', 'rev-list', '--count', "v$gitVersionBase..HEAD"))

def gitCommitId = execResult('git', 'show-ref', '--abbrev=7', '--head', 'HEAD').split(' ')[0]

def gitDirty = execResult('git', 'status', '--porcelain').size() > 0