$ git clone -n https://src.fedoraproject.org/rpms/perl-Sereal.git /var/lib/mock/f39-build-1543190-36541/root/chroot_tmpdir/scmroot/perl-Sereal
Cloning into '/var/lib/mock/f39-build-1543190-36541/root/chroot_tmpdir/scmroot/perl-Sereal'...
$ git fetch origin a3eb4066d9316482399ca3e345f4473337563c13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sereal
 * [new ref]         a3eb4066d9316482399ca3e345f4473337563c13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3eb406 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild