$ git clone -n https://src.fedoraproject.org/rpms/ghc-base-prelude.git /var/lib/mock/f40-build-775937-128521/root/chroot_tmpdir/scmroot/ghc-base-prelude
Cloning into '/var/lib/mock/f40-build-775937-128521/root/chroot_tmpdir/scmroot/ghc-base-prelude'...
$ git fetch origin ef3cdcb8e87e231f3d332c1c2daffa49af498a77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-base-prelude
 * [new ref]         ef3cdcb8e87e231f3d332c1c2daffa49af498a77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef3cdcb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild