$ git clone -n https://src.fedoraproject.org/rpms/killbots.git /var/lib/mock/f40-build-2264148-54553/root/chroot_tmpdir/scmroot/killbots
Cloning into '/var/lib/mock/f40-build-2264148-54553/root/chroot_tmpdir/scmroot/killbots'...
$ git fetch origin 08a6d24835d03ef92db4ca46d77b87adecb2ff85:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/killbots
 * [new ref]         08a6d24835d03ef92db4ca46d77b87adecb2ff85 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08a6d24 24.01.90