$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-utils.git /var/lib/mock/f45-build-42179-791/root/chroot_tmpdir/scmroot/rust-gstreamer-utils
Cloning into '/var/lib/mock/f45-build-42179-791/root/chroot_tmpdir/scmroot/rust-gstreamer-utils'...
$ git fetch origin 620c44bca2c96eb1d404e0ce778c37866573718e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-utils
 * [new ref]         620c44bca2c96eb1d404e0ce778c37866573718e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 620c44b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild