$ git clone -n https://src.fedoraproject.org/rpms/iaito.git /var/lib/mock/f41-build-side-1-2834424-33684/root/chroot_tmpdir/scmroot/iaito
Cloning into '/var/lib/mock/f41-build-side-1-2834424-33684/root/chroot_tmpdir/scmroot/iaito'...
$ git fetch origin ac6b0694c948301fd7ec8167542d9503cccec792:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iaito
 * [new ref]         ac6b0694c948301fd7ec8167542d9503cccec792 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac6b069 bump to 5.9.4