$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl.git /var/lib/mock/f42-build-side-1-3588200-46943/root/chroot_tmpdir/scmroot/rust-gstreamer-gl
Cloning into '/var/lib/mock/f42-build-side-1-3588200-46943/root/chroot_tmpdir/scmroot/rust-gstreamer-gl'...
$ git fetch origin 58106e5276aaf677632e979ff7297838ff2985d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl
 * [new ref]         58106e5276aaf677632e979ff7297838ff2985d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58106e5 Update to version 0.23.7