$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-player-sys.git /var/lib/mock/f40-build-2655770-66912/root/chroot_tmpdir/scmroot/rust-gstreamer-player-sys
Cloning into '/var/lib/mock/f40-build-2655770-66912/root/chroot_tmpdir/scmroot/rust-gstreamer-player-sys'...
$ git fetch origin 027bbd897f81c6ef294650403893d76e1710663a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-player-sys
 * [new ref]         027bbd897f81c6ef294650403893d76e1710663a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 027bbd8 Update to version 0.22.0; Fixes RHBZ#2263364