$ git clone -n https://src.fedoraproject.org/rpms/kf5-kio.git /var/lib/mock/f38-build-729642-101821/root/chroot_tmpdir/scmroot/kf5-kio
Cloning into '/var/lib/mock/f38-build-729642-101821/root/chroot_tmpdir/scmroot/kf5-kio'...
$ git fetch origin d3622c09b0adccce6e37692f19d4911732f208b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kio
 * [new ref]         d3622c09b0adccce6e37692f19d4911732f208b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3622c0 5.107.0