$ git clone -n https://src.fedoraproject.org/rpms/felix-utils.git /var/lib/mock/f42-build-3346791-45002/root/chroot_tmpdir/scmroot/felix-utils
Cloning into '/var/lib/mock/f42-build-3346791-45002/root/chroot_tmpdir/scmroot/felix-utils'...
$ git fetch origin 76be2465848ad0d36ffd7ac50bc7e03d9de4864a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/felix-utils
 * [new ref]         76be2465848ad0d36ffd7ac50bc7e03d9de4864a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76be246 Remove javadoc subpackage