$ git clone -n https://src.fedoraproject.org/rpms/python-mock.git /var/lib/mock/f39-build-1553993-37021/root/chroot_tmpdir/scmroot/python-mock
Cloning into '/var/lib/mock/f39-build-1553993-37021/root/chroot_tmpdir/scmroot/python-mock'...
$ git fetch origin 84b364ea407e27c39a031ab084ce7c7309d1c8ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mock
 * [new ref]         84b364ea407e27c39a031ab084ce7c7309d1c8ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84b364e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild