$ git clone -n https://src.fedoraproject.org/rpms/mysql-connector-java.git /var/lib/mock/f40-build-2377251-60422/root/chroot_tmpdir/scmroot/mysql-connector-java
Cloning into '/var/lib/mock/f40-build-2377251-60422/root/chroot_tmpdir/scmroot/mysql-connector-java'...
$ git fetch origin b8e6528d1d25aea3b12ef409cdf1f4027c90953c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mysql-connector-java
 * [new ref]         b8e6528d1d25aea3b12ef409cdf1f4027c90953c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8e6528 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild