$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-audio-sys.git /var/lib/mock/f40-build-2123010-50751/root/chroot_tmpdir/scmroot/rust-gstreamer-audio-sys
Cloning into '/var/lib/mock/f40-build-2123010-50751/root/chroot_tmpdir/scmroot/rust-gstreamer-audio-sys'...
$ git fetch origin 833648286b00359b2189e890f25f2ea0f5056189:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-audio-sys
 * [new ref]         833648286b00359b2189e890f25f2ea0f5056189 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8336482 Update to version 0.21.1; Fixes RHBZ#2242107