$ git clone -n https://src.fedoraproject.org/rpms/python-flit-core.git /var/lib/mock/f40-build-2026477-47238/root/chroot_tmpdir/scmroot/python-flit-core
Cloning into '/var/lib/mock/f40-build-2026477-47238/root/chroot_tmpdir/scmroot/python-flit-core'...
$ git fetch origin 908e4ce9007cccd64741c08ca8ad55e5a1e20b52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flit-core
 * [new ref]         908e4ce9007cccd64741c08ca8ad55e5a1e20b52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 908e4ce Remove outdated comment, this spec always builds only flit-core