Git describe shows old tag

I believe there is a bug in git describe. When using the command `git describe –tags` an old tag version was returned. The repo had a lightweight tag at v0.6.1, which was correctly shown by `git tag` but did not get returned by `git describe –tags` OR `git describe –all`. The command `git for-each-ref --format="%(refname:short)" --sort=-authordate --count=1 refs/tags` worked correctly. Console logs:

λ git tag v0.1.0 v0.1.1 v0.1.10 v0.1.11 v0.1.12 v0.1.13 v0.1.14 v0.1.15 v0.1.16 v0.1.17 v0.1.18 v0.1.2 v0.1.3 v0.1.4 v0.1.5 v0.1.6 v0.1.7 v0.1.8 v0.1.9 v0.2.0 v0.2.1 v0.2.2 v0.2.3 v0.2.4 v0.2.5 v0.2.7 v0.2.8 v0.2.9 v0.3.0 v0.3.1 v0.3.2 v0.3.3 v0.3.4 v0.4.0 v0.4.1 v0.4.9 v0.5.0 v0.5.1 v0.5.10 v0.5.11 v0.5.12 v0.5.13 v0.5.14 v0.5.15 v0.5.16 v0.5.17 v0.5.18 v0.5.19 v0.5.2 v0.5.20 v0.5.21 v0.5.3 v0.5.4 v0.5.5 v0.5.6 v0.5.7 v0.5.8 v0.5.9 v0.6 v0.6.1

λ git describe --all tags/v0.5.20

λ git describe --all --debug describe HEAD tags/v0.5.20

λ git describe --all --debug describe HEAD tags/v0.5.20

λ git for-each-ref --format="%(refname:short)" --sort=-authordate --count=1 refs/tags v0.6.1

-Stephen Eckels