$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-gl-egl-sys.git /var/lib/mock/f39-build-1643384-40234/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-egl-sys
Cloning into '/var/lib/mock/f39-build-1643384-40234/root/chroot_tmpdir/scmroot/rust-gstreamer-gl-egl-sys'...
$ git fetch origin 4d7270f3881278e69a28f9406b44b79cdff093ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-gl-egl-sys
 * [new ref]         4d7270f3881278e69a28f9406b44b79cdff093ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d7270f Update to version 0.21.1; Fixes RHBZ#2245486