$ git clone -n https://src.fedoraproject.org/rpms/poetry.git /var/lib/mock/f40-build-2160864-50941/root/chroot_tmpdir/scmroot/poetry
Cloning into '/var/lib/mock/f40-build-2160864-50941/root/chroot_tmpdir/scmroot/poetry'...
$ git fetch origin c12ecd2402b635511eb7610b48ae4a1b3c47df03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/poetry
 * [new ref]         c12ecd2402b635511eb7610b48ae4a1b3c47df03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c12ecd2 Update to 1.6.1