$ git clone -n https://src.fedoraproject.org/rpms/python-sphinx-theme-builder.git /var/lib/mock/f39-build-1426345-31593/root/chroot_tmpdir/scmroot/python-sphinx-theme-builder
Cloning into '/var/lib/mock/f39-build-1426345-31593/root/chroot_tmpdir/scmroot/python-sphinx-theme-builder'...
$ git fetch origin 2aa19122b1e80062cb88b980ff07b1f88bcaf104:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinx-theme-builder
 * [new ref]         2aa19122b1e80062cb88b980ff07b1f88bcaf104 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2aa1912 Version 0.2.0b2.  Drop upstreamed tomllib patch.