$ git clone -n https://src.fedoraproject.org/rpms/rust-difftastic.git /var/lib/mock/f41-build-side-1-2928786-35102/root/chroot_tmpdir/scmroot/rust-difftastic
Cloning into '/var/lib/mock/f41-build-side-1-2928786-35102/root/chroot_tmpdir/scmroot/rust-difftastic'...
$ git fetch origin 9dd7c04bdd064fc2924cf209f108f5d256749467:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-difftastic
 * [new ref]         9dd7c04bdd064fc2924cf209f108f5d256749467 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dd7c04 Ship manpage