$ git clone -n https://src.fedoraproject.org/rpms/plexus-components-pom.git /var/lib/mock/f40-build-2127602-50785/root/chroot_tmpdir/scmroot/plexus-components-pom
Cloning into '/var/lib/mock/f40-build-2127602-50785/root/chroot_tmpdir/scmroot/plexus-components-pom'...
$ git fetch origin d8e0294dd55eb81721934bf610ef6c5502ca2a3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plexus-components-pom
 * [new ref]         d8e0294dd55eb81721934bf610ef6c5502ca2a3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8e0294 Update javapackages test plan to f40