$ git clone -n https://src.fedoraproject.org/rpms/ghc9.0.git /var/lib/mock/f40-build-799221-142251/root/chroot_tmpdir/scmroot/ghc9.0
Cloning into '/var/lib/mock/f40-build-799221-142251/root/chroot_tmpdir/scmroot/ghc9.0'...
$ git fetch origin ecef1c15181fc213a1d66301ff9c57722a373ff3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc9.0
 * [new ref]         ecef1c15181fc213a1d66301ff9c57722a373ff3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ecef1c1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild