$ git clone -n https://src.fedoraproject.org/rpms/rust-inferno.git /var/lib/mock/f45-build-42609-795/root/chroot_tmpdir/scmroot/rust-inferno
Cloning into '/var/lib/mock/f45-build-42609-795/root/chroot_tmpdir/scmroot/rust-inferno'...
$ git fetch origin 291be0601d544b75407ce415105eb420712d68d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-inferno
 * [new ref]         291be0601d544b75407ce415105eb420712d68d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 291be06 Update to version 0.12.8; Fixes RHBZ#2502105