$ git clone -n https://src.fedoraproject.org/rpms/iaito.git /var/lib/mock/f40-build-2199334-51732/root/chroot_tmpdir/scmroot/iaito
Cloning into '/var/lib/mock/f40-build-2199334-51732/root/chroot_tmpdir/scmroot/iaito'...
$ git fetch origin d6b8e90a360cea6bfa753d76745129f8288b8e45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iaito
 * [new ref]         d6b8e90a360cea6bfa753d76745129f8288b8e45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6b8e90 rebuild iaito with capstone 5.0.1