clone warnings - MissingTaggerEntry

[Aaron Armstrong Skomra]

When I clone linux-stable on two separate machines I get the following warnings:

warning: object 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 26791a8bcf0e6d33f43aef7682bdb555236d56de:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 9e734775f7c22d2f89943ad6c745571f1930105f:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 0397236d43e48e821cce5bbe6a80a1a56bb7cc3a:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object ebb5573ea8beaf000d4833735f3e53acb9af844c:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 06f6d9e2f140466eeb41e494e14167f90210f89d:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 701d7ecec3e0c6b4ab9bb824fd2b34be4da63b7e:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 733ad933f62e82ebc92fed988c7f0795e64dea62:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object c521cb0f10ef2bf28a18e1cc8adf378ccbbe5a19:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object a339981ec18d304f9efeb9ccf01b1f04302edf32:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 254cc2c3d0745835f73f5c9a76482b691668a738:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object 279c674f31885b18fd312149e7938850f7bd13bb:
missingTaggerEntry: invalid format - expected 'tagger' line
warning: object ea5a02080269424e629de1e7f1f385ba9be337ba:
missingTaggerEntry: invalid format - expected 'tagger' line

I googling this error didn't lead to any good results. Googling
"missingTaggerEntry" also didn't lead to any good results. Is it safe
to ignore "missingTaggerEntry"?

Thanks for your time,
Aaron