$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-player.git /var/lib/mock/f41-build-side-1-2838224-33744/root/chroot_tmpdir/scmroot/rust-gstreamer-player
Cloning into '/var/lib/mock/f41-build-side-1-2838224-33744/root/chroot_tmpdir/scmroot/rust-gstreamer-player'...
$ git fetch origin 96246a9f8157214e3b40495baf601e2f7f271b66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-player
 * [new ref]         96246a9f8157214e3b40495baf601e2f7f271b66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96246a9 unused leaf package for more than two release cycles