Building using temurin-build for a given commit SHA determines incorrect jdk-version

[andrew-m-leonard]

Do a temurin-build of a given commit SHA, eg:

16:43:24    BUILD_VARIANT = temurin
16:43:24    TAG = 
16:43:24    BRANCH = 91d5132596b

SHA is described (ie.nearest tag) by : jdk-21.0.11+3_adopt-393-g91d5132596b
however temurin-build determines the "latest" tag for the whole repo, not from the SHA, which ends up with:

16:43:24  getOpenJDKTag(): Determining OpenJDK tag to use for 'version'
16:43:24    getOpenJDKTag(): Determining tag from checked out repository..
16:43:24  From /home/jenkins/workspace/Grinder/aqa-tests/RWS/PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP/workspace/./build//src
16:43:24   * branch                    HEAD       -> FETCH_HEAD
16:43:24  OpenJDK repo tag is jdk-21.0.11+4