$ git clone -n https://src.fedoraproject.org/rpms/HepMC3.git /var/lib/mock/f41-build-1153737-21307/root/chroot_tmpdir/scmroot/HepMC3
Cloning into '/var/lib/mock/f41-build-1153737-21307/root/chroot_tmpdir/scmroot/HepMC3'...
$ git fetch origin 266de828ad5041829ddcbd0aeeae8008131f2577:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/HepMC3
 * [new ref]         266de828ad5041829ddcbd0aeeae8008131f2577 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 266de82 Suppress a valgrind error on Fedora 39 ppc64le