$ git clone -n https://src.fedoraproject.org/rpms/mysql-connector-java.git /var/lib/mock/f40-build-2665050-67091/root/chroot_tmpdir/scmroot/mysql-connector-java
Cloning into '/var/lib/mock/f40-build-2665050-67091/root/chroot_tmpdir/scmroot/mysql-connector-java'...
$ git fetch origin 80d42b07b537cb6b1d0696aeb3c2cc787fa0c4d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mysql-connector-java
 * [new ref]         80d42b07b537cb6b1d0696aeb3c2cc787fa0c4d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 80d42b0 Rebuilt for java-21-openjdk as system jdk