$ git clone -n https://src.fedoraproject.org/rpms/linuxptp.git /var/lib/mock/f45-build-17443-499/root/chroot_tmpdir/scmroot/linuxptp
Cloning into '/var/lib/mock/f45-build-17443-499/root/chroot_tmpdir/scmroot/linuxptp'...
$ git fetch origin e288ca57b88f8f19d10968863ae67c646a014a7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/linuxptp
 * [new ref]         e288ca57b88f8f19d10968863ae67c646a014a7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e288ca5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild