$ git clone -n https://src.fedoraproject.org/rpms/perl-Sereal-Decoder.git /var/lib/mock/f40-build-778721-130078/root/chroot_tmpdir/scmroot/perl-Sereal-Decoder
Cloning into '/var/lib/mock/f40-build-778721-130078/root/chroot_tmpdir/scmroot/perl-Sereal-Decoder'...
$ git fetch origin e86d455717d92fd6f7514efc8aec7d204afbe3ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sereal-Decoder
 * [new ref]         e86d455717d92fd6f7514efc8aec7d204afbe3ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e86d455 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild