$ git clone -n https://src.fedoraproject.org/rpms/ghc-cborg.git /var/lib/mock/f40-build-776313-128763/root/chroot_tmpdir/scmroot/ghc-cborg
Cloning into '/var/lib/mock/f40-build-776313-128763/root/chroot_tmpdir/scmroot/ghc-cborg'...
$ git fetch origin ac9071ecfafa64cec9da609cbe67260eca01aac4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cborg
 * [new ref]         ac9071ecfafa64cec9da609cbe67260eca01aac4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac9071e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild