$ git clone -n https://src.fedoraproject.org/rpms/ghc9.6.git /var/lib/mock/f40-build-2292457-56136/root/chroot_tmpdir/scmroot/ghc9.6
Cloning into '/var/lib/mock/f40-build-2292457-56136/root/chroot_tmpdir/scmroot/ghc9.6'...
$ git fetch origin 582a37a7ed8edecae4169f13a021ce45d8770502:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc9.6
 * [new ref]         582a37a7ed8edecae4169f13a021ce45d8770502 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 582a37a upstream rts warnings fix from 9.8 (fixes rhbz#2259420)