/usr/share/doc/git/contrib/credential/ is in git 1:1.9.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/git/contrib/credential/gnome-keyring/
/usr/share/doc/git/contrib/credential/gnome-keyring/Makefile
/usr/share/doc/git/contrib/credential/gnome-keyring/git-credential-gnome-keyring.c
/usr/share/doc/git/contrib/credential/netrc/
/usr/share/doc/git/contrib/credential/netrc/Makefile
/usr/share/doc/git/contrib/credential/netrc/git-credential-netrc
/usr/share/doc/git/contrib/credential/netrc/test.netrc
/usr/share/doc/git/contrib/credential/netrc/test.pl
/usr/share/doc/git/contrib/credential/osxkeychain/
/usr/share/doc/git/contrib/credential/osxkeychain/Makefile
/usr/share/doc/git/contrib/credential/osxkeychain/git-credential-osxkeychain.c
/usr/share/doc/git/contrib/credential/wincred/
/usr/share/doc/git/contrib/credential/wincred/Makefile
/usr/share/doc/git/contrib/credential/wincred/git-credential-wincred.c