$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl-x11_0.21.git /var/lib/mock/f40-build-1821433-24912/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-x11_0.21
Cloning into '/var/lib/mock/f40-build-1821433-24912/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-x11_0.21'...
$ git fetch origin 92e6a96a1bbceb7aecafd07a85072740d8da3b5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl-x11_0.21
 * [new ref]         92e6a96a1bbceb7aecafd07a85072740d8da3b5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92e6a96 Initial import (gstreamer-gl-x11 0.21 compat package)