$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl.git /var/lib/mock/f40-build-2712485-72012/root/chroot_tmpdir/scmroot/rust-gstreamer-gl
Cloning into '/var/lib/mock/f40-build-2712485-72012/root/chroot_tmpdir/scmroot/rust-gstreamer-gl'...
$ git fetch origin 1472e9d4609fe90e3dc82ca47df862f685bc479b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl
 * [new ref]         1472e9d4609fe90e3dc82ca47df862f685bc479b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1472e9d Update to version 0.22.0; Fixes RHBZ#2263355