Traceback (most recent call last):File "/home/fdroid/fdroidserver/fdroidserver/build.py", line 1208, in mainif trybuild(app, build, build_dir, output_dir, log_dir,~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^also_check_dir, srclib_dir, extlib_dir,^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^tmp_dir, repo_dir, vcs, options.test,^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^options.server, options.force,^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^options.onserver, options.refresh):^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^File "/home/fdroid/fdroidserver/fdroidserver/build.py", line 921, in trybuildvcs.gotorevision(build.commit, refresh)~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^File "/home/fdroid/fdroidserver/fdroidserver/common.py", line 1659, in gotorevisionraise excFile "/home/fdroid/fdroidserver/fdroidserver/common.py", line 1648, in gotorevisionself.gotorevisionx(rev)~~~~~~~~~~~~~~~~~~^^^^^File "/home/fdroid/fdroidserver/fdroidserver/common.py", line 1817, in gotorevisionxraise VCSException(_("Git checkout of '%s' failed") % rev, p.output)fdroidserver.exception.VCSException: Git checkout of '7d27ee20581b121e4e7802500875aa8daff29d0f' failed==== detail begin ====fatal: unable to read tree (7d27ee20581b121e4e7802500875aa8daff29d0f)==== detail end ====