$ git clone -n https://src.fedoraproject.org/rpms/ghc-cookie.git /var/lib/mock/f40-build-2591642-62667/root/chroot_tmpdir/scmroot/ghc-cookie
Cloning into '/var/lib/mock/f40-build-2591642-62667/root/chroot_tmpdir/scmroot/ghc-cookie'...
$ git fetch origin e5be4d7bf9b02a6b9c0926c185127a7da25764b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cookie
 * [new ref]         e5be4d7bf9b02a6b9c0926c185127a7da25764b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5be4d7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild