$ git clone -n https://src.fedoraproject.org/rpms/libqalculate.git /var/lib/mock/f40-build-2247224-53860/root/chroot_tmpdir/scmroot/libqalculate
Cloning into '/var/lib/mock/f40-build-2247224-53860/root/chroot_tmpdir/scmroot/libqalculate'...
$ git fetch origin 663a1d9a0124276202b5c0253aaafb541885b0f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libqalculate
 * [new ref]         663a1d9a0124276202b5c0253aaafb541885b0f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 663a1d9 Update to v4.9.0