$ git clone -n https://git.cclinux.org/stage/rpms/libfastjson.git /mnt/compose/mock/dist-circle8-build-109218-61681/root/chroot_tmpdir/scmroot/libfastjson
Cloning into '/mnt/compose/mock/dist-circle8-build-109218-61681/root/chroot_tmpdir/scmroot/libfastjson'...
$ git fetch origin cb9c20ad73aa2c84a48f7ec120e968a8bb6deeb5:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/libfastjson
 * [new ref]         cb9c20ad73aa2c84a48f7ec120e968a8bb6deeb5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb9c20a import libfastjson-0.99.9-2.el8