$ git clone -n https://src.fedoraproject.org/rpms/lksctp-tools.git /var/lib/mock/f45-build-17459-499/root/chroot_tmpdir/scmroot/lksctp-tools
Cloning into '/var/lib/mock/f45-build-17459-499/root/chroot_tmpdir/scmroot/lksctp-tools'...
$ git fetch origin c8774cc1e1001b6c2934608d6da32b10984a20bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lksctp-tools
 * [new ref]         c8774cc1e1001b6c2934608d6da32b10984a20bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8774cc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild