$ git clone -n https://src.fedoraproject.org/rpms/plexus-io.git /var/lib/mock/f40-build-2630306-65649/root/chroot_tmpdir/scmroot/plexus-io
Cloning into '/var/lib/mock/f40-build-2630306-65649/root/chroot_tmpdir/scmroot/plexus-io'...
$ git fetch origin 06c92bad23f7f1d6f829555c65035d09f5e9523e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plexus-io
 * [new ref]         06c92bad23f7f1d6f829555c65035d09f5e9523e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06c92ba Rebuilt for java-21-openjdk as system jdk