$ git clone -n https://src.fedoraproject.org/rpms/trafficserver.git /var/lib/mock/f38-build-side-42-init-devel-1377872-30706/root/chroot_tmpdir/scmroot/trafficserver
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1377872-30706/root/chroot_tmpdir/scmroot/trafficserver'...
$ git fetch origin 5b85b1b167457a12979e3b634822b44f403330ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/trafficserver
 * [new ref]         5b85b1b167457a12979e3b634822b44f403330ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b85b1b Update to upstream 9.2.2