$ git clone -n https://src.fedoraproject.org/rpms/rust-radium.git /var/lib/mock/f38-build-side-43-rust-devel-1412782-31443/root/chroot_tmpdir/scmroot/rust-radium
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1412782-31443/root/chroot_tmpdir/scmroot/rust-radium'...
$ git fetch origin 5d08eed6de89a8c8d47adb6d80a0855a046e0405:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-radium
 * [new ref]         5d08eed6de89a8c8d47adb6d80a0855a046e0405 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d08eed Update to version 0.7.0