$ git clone -n https://src.fedoraproject.org/rpms/ghc-cborg-json.git /var/lib/mock/f40-build-2591518-62665/root/chroot_tmpdir/scmroot/ghc-cborg-json
Cloning into '/var/lib/mock/f40-build-2591518-62665/root/chroot_tmpdir/scmroot/ghc-cborg-json'...
$ git fetch origin 8540dce5fd7e366b2d4a35773ff2b7945750edac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cborg-json
 * [new ref]         8540dce5fd7e366b2d4a35773ff2b7945750edac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8540dce Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild