$ git clone -n https://src.fedoraproject.org/rpms/cinnamon-session.git /var/lib/mock/f40-build-2208957-52150/root/chroot_tmpdir/scmroot/cinnamon-session
Cloning into '/var/lib/mock/f40-build-2208957-52150/root/chroot_tmpdir/scmroot/cinnamon-session'...
$ git fetch origin df6a79db321da52ce0787c1a88cbfc7918a66e04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cinnamon-session
 * [new ref]         df6a79db321da52ce0787c1a88cbfc7918a66e04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df6a79d Make sure wayland sessions get a login shell