$ git clone -n https://src.fedoraproject.org/rpms/znc-clientbuffer.git /var/lib/mock/f45-build-39373-734/root/chroot_tmpdir/scmroot/znc-clientbuffer
Cloning into '/var/lib/mock/f45-build-39373-734/root/chroot_tmpdir/scmroot/znc-clientbuffer'...
$ git fetch origin d5ac70c5a3f494c0c07cf2c76b50e0e8bd2b5217:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/znc-clientbuffer
 * [new ref]         d5ac70c5a3f494c0c07cf2c76b50e0e8bd2b5217 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5ac70c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild