$ git clone -n https://src.fedoraproject.org/rpms/rust-futures-task.git /var/lib/mock/f38-build-side-43-rust-devel-1416584-31457/root/chroot_tmpdir/scmroot/rust-futures-task
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416584-31457/root/chroot_tmpdir/scmroot/rust-futures-task'...
$ git fetch origin 0d588734bbdb0accd151180771c8bf08f8dfff88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-futures-task
 * [new ref]         0d588734bbdb0accd151180771c8bf08f8dfff88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d58873 Update to version 0.3.28; Fixes RHBZ#2183274