$ git clone -n https://src.fedoraproject.org/rpms/R-randomForest.git /var/lib/mock/f45-build-6348-348/root/chroot_tmpdir/scmroot/R-randomForest
Cloning into '/var/lib/mock/f45-build-6348-348/root/chroot_tmpdir/scmroot/R-randomForest'...
$ git fetch origin 9ebd51cd58f31bffb76e65a11c1706ad548f14b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-randomForest
 * [new ref]         9ebd51cd58f31bffb76e65a11c1706ad548f14b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ebd51c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild