$ git clone -n https://src.fedoraproject.org/rpms/rust-zgvariant.git /var/lib/mock/f45-build-46346-833/root/chroot_tmpdir/scmroot/rust-zgvariant
Cloning into '/var/lib/mock/f45-build-46346-833/root/chroot_tmpdir/scmroot/rust-zgvariant'...
$ git fetch origin f48e73677c17d435bd7505015f71bc81f1f2334f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zgvariant
 * [new ref]         f48e73677c17d435bd7505015f71bc81f1f2334f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f48e736 Backport fix for tests on big-endian architectures