$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl-wayland.git /var/lib/mock/f40-build-2652860-66895/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-wayland
Cloning into '/var/lib/mock/f40-build-2652860-66895/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-wayland'...
$ git fetch origin 8fd92292bab4bec04f3e80a660cca75d98e54f3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl-wayland
 * [new ref]         8fd92292bab4bec04f3e80a660cca75d98e54f3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8fd9229 Update to version 0.21.1; Fixes RHBZ#2245487