$ git clone -n https://github.com/fedora-riscv/rust.git /var/lib/mock/f38-build-side-42-init-devel-583402-26085/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-583402-26085/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin 73af621c1b142482ac2df8f8ce6880f745514886:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/rust
 * [new ref]         73af621c1b142482ac2df8f8ce6880f745514886 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73af621 Merge remote-tracking branch 'fedoraproject/f38' into f38-rv64