$ git clone -n https://src.fedoraproject.org/rpms/rust-gufo-svg.git /var/lib/mock/f45-build-42206-791/root/chroot_tmpdir/scmroot/rust-gufo-svg
Cloning into '/var/lib/mock/f45-build-42206-791/root/chroot_tmpdir/scmroot/rust-gufo-svg'...
$ git fetch origin b7f99802ab7f3d2b3a5d521d7544b8fd40a658b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gufo-svg
 * [new ref]         b7f99802ab7f3d2b3a5d521d7544b8fd40a658b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7f9980 Update to version 0.5.0; Fixes RHBZ#2529503