$ git clone -n https://src.fedoraproject.org/rpms/ghc-Boolean.git /var/lib/mock/f42-build-877408-180226/root/chroot_tmpdir/scmroot/ghc-Boolean
Cloning into '/var/lib/mock/f42-build-877408-180226/root/chroot_tmpdir/scmroot/ghc-Boolean'...
$ git fetch origin e705f50333980fc2d53200b56490fd781dc00358:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-Boolean
 * [new ref]         e705f50333980fc2d53200b56490fd781dc00358 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e705f50 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild