$ git clone -n https://src.fedoraproject.org/rpms/usd.git /var/lib/mock/f40-build-1443654-23577/root/chroot_tmpdir/scmroot/usd
Cloning into '/var/lib/mock/f40-build-1443654-23577/root/chroot_tmpdir/scmroot/usd'...
$ git fetch origin 66f1af1ec47baa084be81174bdfcea663849dcf4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/usd
 * [new ref]         66f1af1ec47baa084be81174bdfcea663849dcf4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66f1af1 Correct pkgconfig(Ptex) to pkgconfig(ptex) for ptex-2.4.3