$ git clone -n https://src.fedoraproject.org/rpms/gnome-online-accounts.git /var/lib/mock/f41-build-side-1-2750659-31062/root/chroot_tmpdir/scmroot/gnome-online-accounts
Cloning into '/var/lib/mock/f41-build-side-1-2750659-31062/root/chroot_tmpdir/scmroot/gnome-online-accounts'...
$ git fetch origin 346e34ac03696cbfde72ff89fba9fe9068abfaa8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-online-accounts
 * [new ref]         346e34ac03696cbfde72ff89fba9fe9068abfaa8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 346e34a Disable docs in flatpak builds