$ git clone -n https://src.fedoraproject.org/rpms/ghc-basic-prelude.git /var/lib/mock/f40-build-776487-128863/root/chroot_tmpdir/scmroot/ghc-basic-prelude
Cloning into '/var/lib/mock/f40-build-776487-128863/root/chroot_tmpdir/scmroot/ghc-basic-prelude'...
$ git fetch origin b1e4201998cb703c89e24234f2e78c595780e9ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-basic-prelude
 * [new ref]         b1e4201998cb703c89e24234f2e78c595780e9ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1e4201 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild