$ git clone -n http://fedora.riscv.rocks:3000/rpms/R-sys.git /var/lib/mock/f38-build-724850-99489/root/chroot_tmpdir/scmroot/R-sys
Cloning into '/var/lib/mock/f38-build-724850-99489/root/chroot_tmpdir/scmroot/R-sys'...
$ git fetch origin ac5c673d155eedffe8d1bec13fbf954b7c253eb5:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/R-sys
 * [new ref]         ac5c673d155eedffe8d1bec13fbf954b7c253eb5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac5c673 Rebuilt for Fedora/RISCV (riscv64); adding .rvreX to Release: