$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-video.git /var/lib/mock/f40-build-2689114-68106/root/chroot_tmpdir/scmroot/rust-gstreamer-video
Cloning into '/var/lib/mock/f40-build-2689114-68106/root/chroot_tmpdir/scmroot/rust-gstreamer-video'...
$ git fetch origin e291f123d61cfc01404223fcb48260b59779650a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-video
 * [new ref]         e291f123d61cfc01404223fcb48260b59779650a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e291f12 Update to version 0.22.1; Fixes RHBZ#2263368