$ git clone -n https://src.fedoraproject.org/rpms/maven-invoker.git /var/lib/mock/f41-build-712946-13044/root/chroot_tmpdir/scmroot/maven-invoker
Cloning into '/var/lib/mock/f41-build-712946-13044/root/chroot_tmpdir/scmroot/maven-invoker'...
$ git fetch origin cad85a99804df16166d82b879029beea825b32d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-invoker
 * [new ref]         cad85a99804df16166d82b879029beea825b32d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cad85a9 Set maven javaVersion to 8, closes rhbz#2266668