Forked and modified from Benjamin Fuchs, benjaminfuchs/git-wrapper, which was initially based on a gist by (Mike Mueller, mmueller)
This fork dynamically loads in any scripts based on the file path pattern hooks/${COMMAND}/[pre|post]/*.sh where ${COMMAND} is any git command you wish to wrap, and pre or post determines the running sequence. You could easily extend this git override script to add more sequences.