$ git clone -n https://src.fedoraproject.org/rpms/rust-rustix.git /var/lib/mock/f42-build-side-1-3536440-46558/root/chroot_tmpdir/scmroot/rust-rustix
Cloning into '/var/lib/mock/f42-build-side-1-3536440-46558/root/chroot_tmpdir/scmroot/rust-rustix'...
$ git fetch origin 85211d42bc181774b0c4181099e3bcf5da3db65d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustix
 * [new ref]         85211d42bc181774b0c4181099e3bcf5da3db65d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85211d4 Update to version 1.0.7; Fixes RHBZ#2363222