$ git clone -n https://src.fedoraproject.org/rpms/java_cup.git /var/lib/mock/f40-build-2210163-52177/root/chroot_tmpdir/scmroot/java_cup
Cloning into '/var/lib/mock/f40-build-2210163-52177/root/chroot_tmpdir/scmroot/java_cup'...
$ git fetch origin 3f4a453d9efaa3e707f91e7f93d9ad929802e87d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java_cup
 * [new ref]         3f4a453d9efaa3e707f91e7f93d9ad929802e87d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f4a453 Update javapackages test plan to f40