$ git clone -n https://src.fedoraproject.org/rpms/R-tikzDevice.git /var/lib/mock/f45-build-6464-348/root/chroot_tmpdir/scmroot/R-tikzDevice
Cloning into '/var/lib/mock/f45-build-6464-348/root/chroot_tmpdir/scmroot/R-tikzDevice'...
$ git fetch origin 7c746559049748d61bf580e5ffb5950a45a7b069:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-tikzDevice
 * [new ref]         7c746559049748d61bf580e5ffb5950a45a7b069 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c74655 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild