$ git clone -n https://src.fedoraproject.org/rpms/gnome-online-accounts.git /var/lib/mock/f40-build-796417-140692/root/chroot_tmpdir/scmroot/gnome-online-accounts
Cloning into '/var/lib/mock/f40-build-796417-140692/root/chroot_tmpdir/scmroot/gnome-online-accounts'...
$ git fetch origin 69d47773dd4c253dc85f923ab5c3e754d112ac71:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-online-accounts
 * [new ref]         69d47773dd4c253dc85f923ab5c3e754d112ac71 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69d4777 Update to 3.49.4