$ git clone -n https://src.fedoraproject.org/rpms/freeipmi.git /var/lib/mock/f45-build-9245-400/root/chroot_tmpdir/scmroot/freeipmi
Cloning into '/var/lib/mock/f45-build-9245-400/root/chroot_tmpdir/scmroot/freeipmi'...
$ git fetch origin c68eeb0327ff0a638e2cd1126993b10bea6ee06f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freeipmi
 * [new ref]         c68eeb0327ff0a638e2cd1126993b10bea6ee06f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c68eeb0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild