$ git clone -n https://src.fedoraproject.org/rpms/ghc-managed.git /var/lib/mock/f40-build-2279754-55363/root/chroot_tmpdir/scmroot/ghc-managed
Cloning into '/var/lib/mock/f40-build-2279754-55363/root/chroot_tmpdir/scmroot/ghc-managed'...
$ git fetch origin b10a79282718723abdb13a74aea1576900d49c90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-managed
 * [new ref]         b10a79282718723abdb13a74aea1576900d49c90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b10a792 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild