$ git clone -n https://src.fedoraproject.org/rpms/xdg-desktop-portal-kde.git /var/lib/mock/f42-build-side-1-3584370-46893/root/chroot_tmpdir/scmroot/xdg-desktop-portal-kde
Cloning into '/var/lib/mock/f42-build-side-1-3584370-46893/root/chroot_tmpdir/scmroot/xdg-desktop-portal-kde'...
$ git fetch origin beeb322a95c004401ef75df7795dc235f4cb599d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xdg-desktop-portal-kde
 * [new ref]         beeb322a95c004401ef75df7795dc235f4cb599d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at beeb322 6.4.2