$ git clone -n https://src.fedoraproject.org/rpms/oksh.git /var/lib/mock/f45-build-20924-574/root/chroot_tmpdir/scmroot/oksh
Cloning into '/var/lib/mock/f45-build-20924-574/root/chroot_tmpdir/scmroot/oksh'...
$ git fetch origin 31c809c0efec057416822f3dac91b96e5c1050d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/oksh
 * [new ref]         31c809c0efec057416822f3dac91b96e5c1050d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31c809c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild