$ git clone -n https://src.fedoraproject.org/rpms/traceroute.git /var/lib/mock/f45-build-37359-714/root/chroot_tmpdir/scmroot/traceroute
Cloning into '/var/lib/mock/f45-build-37359-714/root/chroot_tmpdir/scmroot/traceroute'...
$ git fetch origin eddacc9efa53d3356e51c6e8e2e120bab11356a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/traceroute
 * [new ref]         eddacc9efa53d3356e51c6e8e2e120bab11356a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eddacc9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild