$ git clone -n https://src.fedoraproject.org/rpms/rust-oxipng.git /var/lib/mock/f45-build-43626-804/root/chroot_tmpdir/scmroot/rust-oxipng
Cloning into '/var/lib/mock/f45-build-43626-804/root/chroot_tmpdir/scmroot/rust-oxipng'...
$ git fetch origin 6066eec412f144fb0bb2e7397bf42bc29bf2ce4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-oxipng
 * [new ref]         6066eec412f144fb0bb2e7397bf42bc29bf2ce4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6066eec No longer patch for clap_mangen 0.2