$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-editing-services-sys.git /var/lib/mock/f39-build-1526366-36061/root/chroot_tmpdir/scmroot/rust-gstreamer-editing-services-sys
Cloning into '/var/lib/mock/f39-build-1526366-36061/root/chroot_tmpdir/scmroot/rust-gstreamer-editing-services-sys'...
$ git fetch origin 5c818697b8f515b661b70c25258c83596c8a2e8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-editing-services-sys
 * [new ref]         5c818697b8f515b661b70c25258c83596c8a2e8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c81869 Regenerate with rust2rpm v25