$ git clone -n https://src.fedoraproject.org/rpms/ghc-contravariant.git /var/lib/mock/f40-build-776235-128705/root/chroot_tmpdir/scmroot/ghc-contravariant
Cloning into '/var/lib/mock/f40-build-776235-128705/root/chroot_tmpdir/scmroot/ghc-contravariant'...
$ git fetch origin dbb63ffdbbb27d5a8e3871fc2c4d71ad61be0f38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-contravariant
 * [new ref]         dbb63ffdbbb27d5a8e3871fc2c4d71ad61be0f38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbb63ff Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild