$ git clone -n https://src.fedoraproject.org/rpms/ghc-th-expand-syns.git /var/lib/mock/f40-build-776339-128763/root/chroot_tmpdir/scmroot/ghc-th-expand-syns
Cloning into '/var/lib/mock/f40-build-776339-128763/root/chroot_tmpdir/scmroot/ghc-th-expand-syns'...
$ git fetch origin 83f05ac3e576747e9c1e8707ba795a9d0bf0c10e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-th-expand-syns
 * [new ref]         83f05ac3e576747e9c1e8707ba795a9d0bf0c10e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83f05ac Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild