$ git clone -n https://github.com/fedora-riscv/rust-kvm-ioctls.git /var/lib/mock/f39-build-2003979-44898/root/chroot_tmpdir/scmroot/rust-kvm-ioctls
Cloning into '/var/lib/mock/f39-build-2003979-44898/root/chroot_tmpdir/scmroot/rust-kvm-ioctls'...
$ git fetch origin 992a087b1f02ac9cf69df68b967956b92183a2b0:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/rust-kvm-ioctls
 * [new ref]         992a087b1f02ac9cf69df68b967956b92183a2b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 992a087 Rebuild for f39