$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl-x11.git /var/lib/mock/f40-build-2712455-72012/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-x11
Cloning into '/var/lib/mock/f40-build-2712455-72012/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-x11'...
$ git fetch origin 06ce4f19c8f0e6e48af03aa324345e1ab98a8f7c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl-x11
 * [new ref]         06ce4f19c8f0e6e48af03aa324345e1ab98a8f7c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06ce4f1 Update to version 0.22.0; Fixes RHBZ#2263360