$ git clone -n http://fedora.riscv.rocks:3000/rpms/rust.git /var/lib/mock/f41-build-side-1-3139885-39837/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/f41-build-side-1-3139885-39837/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin 75ddf70cc4d105a64a43f9b8dad57844f133fc6a:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/rust
 * [new ref]         75ddf70cc4d105a64a43f9b8dad57844f133fc6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75ddf70 Fix patch9