$ git clone -n https://src.fedoraproject.org/rpms/cinnamon-session.git /var/lib/mock/f40-build-774006-127559/root/chroot_tmpdir/scmroot/cinnamon-session
Cloning into '/var/lib/mock/f40-build-774006-127559/root/chroot_tmpdir/scmroot/cinnamon-session'...
$ git fetch origin 503c56d5900d896fcec5c8f474933d82cdfd72ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cinnamon-session
 * [new ref]         503c56d5900d896fcec5c8f474933d82cdfd72ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 503c56d Add buildrequires python3-packaging