$ git clone -n https://src.fedoraproject.org/rpms/ghc-rpm-nvr.git /var/lib/mock/f40-build-776663-129001/root/chroot_tmpdir/scmroot/ghc-rpm-nvr
Cloning into '/var/lib/mock/f40-build-776663-129001/root/chroot_tmpdir/scmroot/ghc-rpm-nvr'...
$ git fetch origin 00cea4bbbaa330215b1b2335fad8053e4c078b63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-rpm-nvr
 * [new ref]         00cea4bbbaa330215b1b2335fad8053e4c078b63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00cea4b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild