$ git clone -n https://src.fedoraproject.org/rpms/cjdns.git /var/lib/mock/f38-build-side-42-init-devel-824775-28360/root/chroot_tmpdir/scmroot/cjdns
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-824775-28360/root/chroot_tmpdir/scmroot/cjdns'...
$ git fetch origin c8bea55950add90da14ec2296f7dd31039c6cac5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cjdns
 * [new ref]         c8bea55950add90da14ec2296f7dd31039c6cac5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8bea55 Restore sodium patch and add new flagdup patch