$ git clone -n https://src.fedoraproject.org/rpms/ghc-vector-builder.git /var/lib/mock/f40-build-776494-128863/root/chroot_tmpdir/scmroot/ghc-vector-builder
Cloning into '/var/lib/mock/f40-build-776494-128863/root/chroot_tmpdir/scmroot/ghc-vector-builder'...
$ git fetch origin 64533b780ff7bb14cdbf2d788ae9baa0690e9f1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-vector-builder
 * [new ref]         64533b780ff7bb14cdbf2d788ae9baa0690e9f1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64533b7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild