$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-video-sys.git /var/lib/mock/f42-build-side-1-3585845-46908/root/chroot_tmpdir/scmroot/rust-gstreamer-video-sys
Cloning into '/var/lib/mock/f42-build-side-1-3585845-46908/root/chroot_tmpdir/scmroot/rust-gstreamer-video-sys'...
$ git fetch origin 9608ea8aea1b0af35bb3a855f631703e1863ea2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-video-sys
 * [new ref]         9608ea8aea1b0af35bb3a855f631703e1863ea2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9608ea8 Update to version 0.23.6; Fixes RHBZ#2365906