$ git clone -n https://src.fedoraproject.org/rpms/gnome-text-editor.git /var/lib/mock/f42-build-side-1-3498631-45963/root/chroot_tmpdir/scmroot/gnome-text-editor
Cloning into '/var/lib/mock/f42-build-side-1-3498631-45963/root/chroot_tmpdir/scmroot/gnome-text-editor'...
$ git fetch origin 13374f601cdba9f0ec46fd5b6d0c3ae46977dc90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-text-editor
 * [new ref]         13374f601cdba9f0ec46fd5b6d0c3ae46977dc90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13374f6 Update to 48.2