$ git clone -n https://src.fedoraproject.org/rpms/ghc-magic.git /var/lib/mock/f40-build-776076-128585/root/chroot_tmpdir/scmroot/ghc-magic
Cloning into '/var/lib/mock/f40-build-776076-128585/root/chroot_tmpdir/scmroot/ghc-magic'...
$ git fetch origin 90b7ac62f6f6139e1e7944ae35a8bddaa4f16b05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-magic
 * [new ref]         90b7ac62f6f6139e1e7944ae35a8bddaa4f16b05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90b7ac6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild