$ git clone -n https://src.fedoraproject.org/rpms/xorg-x11-xinit.git /var/lib/mock/f40-build-2046163-48845/root/chroot_tmpdir/scmroot/xorg-x11-xinit
Cloning into '/var/lib/mock/f40-build-2046163-48845/root/chroot_tmpdir/scmroot/xorg-x11-xinit'...
$ git fetch origin 7313e306a458713a20cd9036c605bf0b012a876a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xorg-x11-xinit
 * [new ref]         7313e306a458713a20cd9036c605bf0b012a876a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7313e30 xorg-x11-xinit 1.4.2