$ git clone -n https://src.fedoraproject.org/rpms/python-black.git /var/lib/mock/f39-build-1616156-38646/root/chroot_tmpdir/scmroot/python-black
Cloning into '/var/lib/mock/f39-build-1616156-38646/root/chroot_tmpdir/scmroot/python-black'...
$ git fetch origin 409cace6abeb381a349e1b79c693a79c78138a2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-black
 * [new ref]         409cace6abeb381a349e1b79c693a79c78138a2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 409cace Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild