$ git clone -n https://src.fedoraproject.org/rpms/rust-linux-loader.git /var/lib/mock/f41-build-side-1-3134118-39717/root/chroot_tmpdir/scmroot/rust-linux-loader
Cloning into '/var/lib/mock/f41-build-side-1-3134118-39717/root/chroot_tmpdir/scmroot/rust-linux-loader'...
$ git fetch origin 58ce7aa153d3746193fa77bf5230f8351173a3e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-linux-loader
 * [new ref]         58ce7aa153d3746193fa77bf5230f8351173a3e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58ce7aa Update to version 0.13.0