$ git clone -n https://src.fedoraproject.org/rpms/trafficserver.git /var/lib/mock/f38-build-side-42-init-devel-1022741-29650/root/chroot_tmpdir/scmroot/trafficserver
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1022741-29650/root/chroot_tmpdir/scmroot/trafficserver'...
$ git fetch origin eb164a287a807c3f74e01f5ed4fdd7ea98271ea9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/trafficserver
 * [new ref]         eb164a287a807c3f74e01f5ed4fdd7ea98271ea9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb164a2 Update to upstream 9.2.0