$ git clone -n https://src.fedoraproject.org/rpms/HepMC3.git /var/lib/mock/f41-build-858601-168464/root/chroot_tmpdir/scmroot/HepMC3
Cloning into '/var/lib/mock/f41-build-858601-168464/root/chroot_tmpdir/scmroot/HepMC3'...
$ git fetch origin a78af3c6612f6525b3e76f63852db10130161f63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/HepMC3
 * [new ref]         a78af3c6612f6525b3e76f63852db10130161f63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a78af3c Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild