$ git clone -n https://src.fedoraproject.org/rpms/python-signature-dispatch.git /var/lib/mock/f40-build-2318607-58286/root/chroot_tmpdir/scmroot/python-signature-dispatch
Cloning into '/var/lib/mock/f40-build-2318607-58286/root/chroot_tmpdir/scmroot/python-signature-dispatch'...
$ git fetch origin 2d1c3019fe4c48814f3e3710ad4612a1d5bdb58e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-signature-dispatch
 * [new ref]         2d1c3019fe4c48814f3e3710ad4612a1d5bdb58e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d1c301 Use flit_core as the build backend