$ git clone -n https://src.fedoraproject.org/rpms/trurl.git /var/lib/mock/f38-build-side-42-init-devel-888485-28507/root/chroot_tmpdir/scmroot/trurl
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-888485-28507/root/chroot_tmpdir/scmroot/trurl'...
$ git fetch origin ae95b72caae36683903684cb98a9d1a1b103a9fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/trurl
 * [new ref]         ae95b72caae36683903684cb98a9d1a1b103a9fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae95b72 Update to 0.8 (rhbz#2215702)