$ git clone -n https://src.fedoraproject.org/rpms/ghc-io-streams.git /var/lib/mock/f40-build-777032-129193/root/chroot_tmpdir/scmroot/ghc-io-streams
Cloning into '/var/lib/mock/f40-build-777032-129193/root/chroot_tmpdir/scmroot/ghc-io-streams'...
$ git fetch origin fc4089f7a76d1420f5852164a87ad797409a5365:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-io-streams
 * [new ref]         fc4089f7a76d1420f5852164a87ad797409a5365 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc4089f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild