$ git clone -n https://src.fedoraproject.org/rpms/cryptopp.git /var/lib/mock/f40-build-791234-137270/root/chroot_tmpdir/scmroot/cryptopp
Cloning into '/var/lib/mock/f40-build-791234-137270/root/chroot_tmpdir/scmroot/cryptopp'...
$ git fetch origin d091e0b21808bbe7158fea21b24ee66307e3182c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cryptopp
 * [new ref]         d091e0b21808bbe7158fea21b24ee66307e3182c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d091e0b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild