$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-hash.git /var/lib/mock/f40-build-775995-128553/root/chroot_tmpdir/scmroot/ghc-data-hash
Cloning into '/var/lib/mock/f40-build-775995-128553/root/chroot_tmpdir/scmroot/ghc-data-hash'...
$ git fetch origin 37edeaaf62054a10b42475b89b8b9a2e85a90f42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-data-hash
 * [new ref]         37edeaaf62054a10b42475b89b8b9a2e85a90f42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37edeaa Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild