Typing remote repository passwords for Github and the like quickly becomes tedious when you are working on a couple of repositories on a daily basis. To help that case, modern git comes tools integrating with keyring implementations on various platforms.
A credential helper integrates with system installed keyring to securely store username/passwords, so that you do not have to type them everytime you want to interact with a remote repository. Popular keyrings include gnome-keyring, which is the one I use on both my Linux installations - Arch and Fedora.
Recently, when I was trying to configure a git credential helper in Fedora, I found that things have changed a bit from the configuration I used with Arch Linux sometime back. I used to have a configuration as follows on Arch Linux, for gnome-keyring integration:
[credential] helper = /usr/lib/git-core/git-credential-gnome-keyring
Following the Arch configuration, I tried to set the same for Fedora 27, only
to find that there is no such
/usr/libexec/git-core. After a bit of googling I found that the configuration
to use is as follows now:
[credential] helper = /usr/libexec/git-core/git-credential-libsecret
libsecret provides a unified library for accessing keyrings on Linux platforms, and this is the setting to use if you have gnome-keyring as your keyring on Fedora. Arch Wiki also shows this configuration as of this writing - GNome Keyring - Git Integration.