$ git clone -n https://src.fedoraproject.org/rpms/ghc-entropy.git /var/lib/mock/f40-build-776041-128585/root/chroot_tmpdir/scmroot/ghc-entropy
Cloning into '/var/lib/mock/f40-build-776041-128585/root/chroot_tmpdir/scmroot/ghc-entropy'...
$ git fetch origin 600e156b0b1b259a3754a2ea755b62828a856a0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-entropy
 * [new ref]         600e156b0b1b259a3754a2ea755b62828a856a0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 600e156 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild