$ git clone -n http://fedora.riscv.rocks:3000/rpms/pkgtreediff.git /var/lib/mock/f38-build-727126-100525/root/chroot_tmpdir/scmroot/pkgtreediff
Cloning into '/var/lib/mock/f38-build-727126-100525/root/chroot_tmpdir/scmroot/pkgtreediff'...
$ git fetch origin b46b71b3c0bc02f74251b7279cfbad163559c030:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/pkgtreediff
 * [new ref]         b46b71b3c0bc02f74251b7279cfbad163559c030 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b46b71b Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: