$ git clone -n https://src.fedoraproject.org/rpms/R-Biobase.git /var/lib/mock/f45-build-1204-298/root/chroot_tmpdir/scmroot/R-Biobase
Cloning into '/var/lib/mock/f45-build-1204-298/root/chroot_tmpdir/scmroot/R-Biobase'...
$ git fetch origin 8c7ba3eeb66535f1a86dec79b435a4ab89b4b315:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-Biobase
 * [new ref]         8c7ba3eeb66535f1a86dec79b435a4ab89b4b315 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c7ba3e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild