$ git clone -n https://src.fedoraproject.org/rpms/zenon.git /var/lib/mock/f40-build-796055-140458/root/chroot_tmpdir/scmroot/zenon
Cloning into '/var/lib/mock/f40-build-796055-140458/root/chroot_tmpdir/scmroot/zenon'...
$ git fetch origin 7cb80570d215bb6cc612f6f4329d5c89d2312400:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zenon
 * [new ref]         7cb80570d215bb6cc612f6f4329d5c89d2312400 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cb8057 Rebuild for rebuilt coq