$ git clone -n https://src.fedoraproject.org/rpms/maven-invoker-plugin.git /var/lib/mock/f41-build-712957-13044/root/chroot_tmpdir/scmroot/maven-invoker-plugin
Cloning into '/var/lib/mock/f41-build-712957-13044/root/chroot_tmpdir/scmroot/maven-invoker-plugin'...
$ git fetch origin 0cba5e9bbfb7c193d191dd02eccf0976e4b2662d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-invoker-plugin
 * [new ref]         0cba5e9bbfb7c193d191dd02eccf0976e4b2662d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cba5e9 Set maven javaVersion to 8, closes rhbz#2266670