$ git clone -n http://fedora.riscv.rocks:3000/rpms/rust.git /var/lib/mock/f40-build-775808-128445/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/f40-build-775808-128445/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin 1fffddac49d1c8e5c345b19e8a2eb9a88ac2c43f:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/rust
 * [new ref]         1fffddac49d1c8e5c345b19e8a2eb9a88ac2c43f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fffdda Merge remote-tracking branch 'up/main' into main-riscv64