looking to update on WSL, & later confirmed on a full install both fail to install git 2.45.0. 

cp: cannot stat '/var/tmp/portage/dev-vcs/git-2.45.0/work/git-2.45.0/contrib/hg-to-git': No such file or directory
 * ERROR: dev-vcs/git-2.45.0::core-kit failed (install phase):
 *   Failed contrib hg-to-git
 *
 * Call stack:
 *     ebuild.sh, line  93:  Called src_install
 *   environment, line 3270:  Called die
 * The specific snippet of code:
 *           cp -rf "${S}"/contrib/${i} "${ED}"/usr/share/${PN}/contrib || die "Failed contrib ${i}";

id expect my rig to update this package successfully since it's portages fetch mechanism.