$ git clone -n https://src.fedoraproject.org/rpms/usd.git /var/lib/mock/f40-build-780871-131364/root/chroot_tmpdir/scmroot/usd
Cloning into '/var/lib/mock/f40-build-780871-131364/root/chroot_tmpdir/scmroot/usd'...
$ git fetch origin bf2ba03146ad314e550c82a6a72e9bbe01f1af1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/usd
 * [new ref]         bf2ba03146ad314e550c82a6a72e9bbe01f1af1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf2ba03 Rebuild for OpenImageIO 2.5.x.