$ git clone -n https://src.fedoraproject.org/rpms/usd.git /var/lib/mock/f38-build-side-42-init-devel-1025339-29683/root/chroot_tmpdir/scmroot/usd
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1025339-29683/root/chroot_tmpdir/scmroot/usd'...
$ git fetch origin 9c103c70b8012b4cd88c97b6f246f6097620f0fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/usd
 * [new ref]         9c103c70b8012b4cd88c97b6f246f6097620f0fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c103c7 Update minimum stb_image versions