$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl-egl-sys.git /var/lib/mock/f42-build-side-1-3585734-46907/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-egl-sys
Cloning into '/var/lib/mock/f42-build-side-1-3585734-46907/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-egl-sys'...
$ git fetch origin 4353e3f19ee82a77b1736df16aca737ebeba62c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl-egl-sys
 * [new ref]         4353e3f19ee82a77b1736df16aca737ebeba62c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4353e3f Update to version 0.23.6; Fixes RHBZ#2365902