$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-audio.git /var/lib/mock/f38-build-side-43-rust-devel-1402458-31188/root/chroot_tmpdir/scmroot/rust-gstreamer-audio
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1402458-31188/root/chroot_tmpdir/scmroot/rust-gstreamer-audio'...
$ git fetch origin 7d8645093d00e7c0badd0ed5c67e836563923a18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-audio
 * [new ref]         7d8645093d00e7c0badd0ed5c67e836563923a18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d86450 Update to 0.21.0