$ git clone -n https://src.fedoraproject.org/rpms/gnome-keyring.git /var/lib/mock/f40-build-790567-136608/root/chroot_tmpdir/scmroot/gnome-keyring
Cloning into '/var/lib/mock/f40-build-790567-136608/root/chroot_tmpdir/scmroot/gnome-keyring'...
$ git fetch origin fdbf9ec661da1fa828dcece87b9fd1f2fef93a2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-keyring
 * [new ref]         fdbf9ec661da1fa828dcece87b9fd1f2fef93a2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdbf9ec Update to 46.1