$ git clone -n https://src.fedoraproject.org/rpms/ghc-bytes.git /var/lib/mock/f40-build-777479-129377/root/chroot_tmpdir/scmroot/ghc-bytes
Cloning into '/var/lib/mock/f40-build-777479-129377/root/chroot_tmpdir/scmroot/ghc-bytes'...
$ git fetch origin 34a88f806e99d73a2711e340c6891b28b3e62113:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-bytes
 * [new ref]         34a88f806e99d73a2711e340c6891b28b3e62113 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34a88f8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild