$ git clone -n https://src.fedoraproject.org/rpms/python-fast-simplification.git /var/lib/mock/f41-build-856595-167686/root/chroot_tmpdir/scmroot/python-fast-simplification
Cloning into '/var/lib/mock/f41-build-856595-167686/root/chroot_tmpdir/scmroot/python-fast-simplification'...
$ git fetch origin cde46a9ba8071643799dd995476ddcb80aae9447:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fast-simplification
 * [new ref]         cde46a9ba8071643799dd995476ddcb80aae9447 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cde46a9 Initial package (close RHBZ#2310827)