Git 2.20.4

1. c495fd3 refspec: add back a refspec_item_init() function by Ævar Arnfjörð Bjarmason · 8 years ago
2. dc06422 refspec: s/refspec_item_init/&_or_die/g by Ævar Arnfjörð Bjarmason · 8 years ago
3. 6c301ad fetch: do not pass ref-prefixes for fetch by exact SHA1 by Jonathan Nieder · 8 years ago
4. 6373cb5 refspec: consolidate ref-prefix generation logic by Brandon Williams · 8 years ago
5. 860fdf1 refspec: remove the deprecated functions by Brandon Williams · 8 years ago
6. c8fa9ef refspec: convert valid_fetch_refspec to use parse_refspec by Brandon Williams · 8 years ago
7. 6d4c057 refspec: introduce struct refspec by Brandon Williams · 8 years ago
8. 0ad4a5f refspec: rename struct refspec to struct refspec_item by Brandon Williams · 8 years ago
9. ec0cb49 refspec: move refspec parsing logic into its own file by Brandon Williams · 8 years ago