$ git clone -n https://src.fedoraproject.org/rpms/python-libcst.git /var/lib/mock/f40-build-2098356-50437/root/chroot_tmpdir/scmroot/python-libcst
Cloning into '/var/lib/mock/f40-build-2098356-50437/root/chroot_tmpdir/scmroot/python-libcst'...
$ git fetch origin a18280f8dad42dd738314b9844336ed6a7f7d16f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-libcst
 * [new ref]         a18280f8dad42dd738314b9844336ed6a7f7d16f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a18280f Fix build --without tests